diff --git a/components/table/hooks/useSelection.tsx b/components/table/hooks/useSelection.tsx
index af485fa15e..3bf6bd3f52 100644
--- a/components/table/hooks/useSelection.tsx
+++ b/components/table/hooks/useSelection.tsx
@@ -28,6 +28,7 @@ import type {
   ExpandType,
   GetPopupContainer,
 } from '../interface';
+import useMaxLevel from '../../vc-tree/useMaxLevel';
 
 // TODO: warning if use ajax!!!
 
@@ -120,7 +121,7 @@ export default function useSelection<RecordType>(
 
   const keyEntities = computed(() =>
     mergedRowSelection.value.checkStrictly
-      ? { keyEntities: null }
+      ? null
       : convertDataToEntities(configRef.data.value as unknown as DataNode[], {
           externalGetKey: configRef.getRowKey.value as any,
           childrenPropName: configRef.childrenColumnName.value,
@@ -155,7 +156,7 @@ export default function useSelection<RecordType>(
     });
     return map;
   });
-
+  const { maxLevel, levelEntities } = useMaxLevel(keyEntities);
   const isCheckboxDisabled: GetCheckDisabled<RecordType> = (r: RecordType) =>
     !!checkboxPropsMap.value.get(configRef.getRowKey.value(r))?.disabled;
 
@@ -167,6 +168,8 @@ export default function useSelection<RecordType>(
       mergedSelectedKeys.value,
       true,
       keyEntities.value,
+      maxLevel.value,
+      levelEntities.value,
       isCheckboxDisabled as any,
     );
     return [checkedKeys || [], halfCheckedKeys];
@@ -571,6 +574,8 @@ export default function useSelection<RecordType>(
                       [...originCheckedKeys, key],
                       true,
                       keyEntities.value,
+                      maxLevel.value,
+                      levelEntities.value,
                       isCheckboxDisabled as any,
                     );
                     const { checkedKeys, halfCheckedKeys } = result;
@@ -584,6 +589,8 @@ export default function useSelection<RecordType>(
                         Array.from(tempKeySet),
                         { checked: false, halfCheckedKeys },
                         keyEntities.value,
+                        maxLevel.value,
+                        levelEntities.value,
                         isCheckboxDisabled as any,
                       ).checkedKeys;
                     }
diff --git a/components/vc-cascader/Cascader.tsx b/components/vc-cascader/Cascader.tsx
index a00e450d32..251a63cd98 100644
--- a/components/vc-cascader/Cascader.tsx
+++ b/components/vc-cascader/Cascader.tsx
@@ -21,6 +21,7 @@ import { useProvideCascader } from './context';
 import OptionList from './OptionList';
 import { BaseSelect } from '../vc-select';
 import devWarning from '../vc-util/devWarning';
+import useMaxLevel from '../vc-tree/useMaxLevel';
 
 export interface ShowSearchType<OptionType extends BaseOptionType = DefaultOptionType> {
   filter?: (inputValue: string, options: OptionType[], fieldNames: FieldNames) => boolean;
@@ -259,6 +260,8 @@ export default defineComponent({
       ref<SingleValueType[]>([]),
       ref<SingleValueType[]>([]),
     ];
+
+    const { maxLevel, levelEntities } = useMaxLevel(pathKeyEntities);
     watchEffect(() => {
       const [existValues, missingValues] = missingValuesInfo.value;
 
@@ -274,7 +277,13 @@ export default defineComponent({
       const keyPathValues = toPathKeys(existValues);
       const ketPathEntities = pathKeyEntities.value;
 
-      const { checkedKeys, halfCheckedKeys } = conductCheck(keyPathValues, true, ketPathEntities);
+      const { checkedKeys, halfCheckedKeys } = conductCheck(
+        keyPathValues,
+        true,
+        ketPathEntities,
+        maxLevel.value,
+        levelEntities.value,
+      );
 
       // Convert key back to value cells
       [checkedValues.value, halfCheckedValues.value, missingCheckedValues.value] = [
@@ -356,9 +365,17 @@ export default defineComponent({
               nextRawCheckedKeys,
               { checked: false, halfCheckedKeys: halfCheckedPathKeys },
               pathKeyEntities.value,
+              maxLevel.value,
+              levelEntities.value,
             ));
           } else {
-            ({ checkedKeys } = conductCheck(nextRawCheckedKeys, true, pathKeyEntities.value));
+            ({ checkedKeys } = conductCheck(
+              nextRawCheckedKeys,
+              true,
+              pathKeyEntities.value,
+              maxLevel.value,
+              levelEntities.value,
+            ));
           }
 
           // Roll up to parent level keys
diff --git a/components/vc-select/OptionList.tsx b/components/vc-select/OptionList.tsx
index 7cb1aa68d5..e7e8fb7630 100644
--- a/components/vc-select/OptionList.tsx
+++ b/components/vc-select/OptionList.tsx
@@ -5,7 +5,7 @@ import classNames from '../_util/classNames';
 import pickAttrs from '../_util/pickAttrs';
 import { isValidElement } from '../_util/props-util';
 import createRef from '../_util/createRef';
-import { computed, defineComponent, nextTick, reactive, watch } from 'vue';
+import { computed, defineComponent, nextTick, reactive, toRaw, watch } from 'vue';
 import List from '../vc-virtual-list';
 import useMemo from '../_util/hooks/useMemo';
 import { isPlatformMac } from './utils/platformUtil';
@@ -105,7 +105,9 @@ const OptionList = defineComponent({
       () => {
         if (!baseProps.multiple && baseProps.open && props.rawValues.size === 1) {
           const value = Array.from(props.rawValues)[0];
-          const index = memoFlattenOptions.value.findIndex(({ data }) => data.value === value);
+          const index = toRaw(memoFlattenOptions.value).findIndex(
+            ({ data }) => data.value === value,
+          );
           if (index !== -1) {
             setActive(index);
             nextTick(() => {
diff --git a/components/vc-select/hooks/useFilterOptions.ts b/components/vc-select/hooks/useFilterOptions.ts
index 97720e3487..41f52cd4de 100644
--- a/components/vc-select/hooks/useFilterOptions.ts
+++ b/components/vc-select/hooks/useFilterOptions.ts
@@ -8,7 +8,7 @@ import type {
 } from '../Select';
 import { injectPropsWithOption } from '../utils/valueUtil';
 import type { Ref } from 'vue';
-import { computed } from 'vue';
+import { toRaw, computed } from 'vue';
 
 function includes(test: any, search: string) {
   return toArray(test).join('').toUpperCase().includes(search);
@@ -22,22 +22,24 @@ export default (
   optionFilterProp?: Ref<string>,
 ) =>
   computed(() => {
-    if (!searchValue.value || filterOption.value === false) {
+    const searchValueVal = searchValue.value;
+    const optionFilterPropValue = optionFilterProp?.value;
+    const filterOptionValue = filterOption?.value;
+    if (!searchValueVal || filterOptionValue === false) {
       return options.value;
     }
-
     const { options: fieldOptions, label: fieldLabel, value: fieldValue } = fieldNames.value;
     const filteredOptions: DefaultOptionType[] = [];
 
-    const customizeFilter = typeof filterOption.value === 'function';
+    const customizeFilter = typeof filterOptionValue === 'function';
 
-    const upperSearch = searchValue.value.toUpperCase();
+    const upperSearch = searchValueVal.toUpperCase();
     const filterFunc = customizeFilter
-      ? (filterOption.value as FilterFunc<BaseOptionType>)
+      ? (filterOptionValue as FilterFunc<BaseOptionType>)
       : (_: string, option: DefaultOptionType) => {
           // Use provided `optionFilterProp`
-          if (optionFilterProp.value) {
-            return includes(option[optionFilterProp.value], upperSearch);
+          if (optionFilterPropValue) {
+            return includes(option[optionFilterPropValue], upperSearch);
           }
 
           // Auto select `label` or `value` by option type
@@ -53,17 +55,17 @@ export default (
       ? opt => injectPropsWithOption(opt)
       : opt => opt;
 
-    options.value.forEach(item => {
+    toRaw(options.value).forEach(item => {
       // Group should check child options
       if (item[fieldOptions]) {
         // Check group first
-        const matchGroup = filterFunc(searchValue.value, wrapOption(item));
+        const matchGroup = filterFunc(searchValueVal, wrapOption(item));
         if (matchGroup) {
           filteredOptions.push(item);
         } else {
           // Check option
           const subOptions = item[fieldOptions].filter((subItem: DefaultOptionType) =>
-            filterFunc(searchValue.value, wrapOption(subItem)),
+            filterFunc(searchValueVal, wrapOption(subItem)),
           );
           if (subOptions.length) {
             filteredOptions.push({
@@ -76,10 +78,9 @@ export default (
         return;
       }
 
-      if (filterFunc(searchValue.value, wrapOption(item))) {
+      if (filterFunc(searchValueVal, wrapOption(item))) {
         filteredOptions.push(item);
       }
     });
-
     return filteredOptions;
   });
diff --git a/components/vc-select/hooks/useOptions.ts b/components/vc-select/hooks/useOptions.ts
index 8b0967ae77..727a70a4c2 100644
--- a/components/vc-select/hooks/useOptions.ts
+++ b/components/vc-select/hooks/useOptions.ts
@@ -1,5 +1,5 @@
 import type { Ref } from 'vue';
-import { shallowRef, watchEffect } from 'vue';
+import { toRaw, shallowRef, watchEffect } from 'vue';
 import type { FieldNames, RawValueType } from '../Select';
 import { convertChildrenToData } from '../utils/legacyUtil';
 
@@ -16,7 +16,7 @@ export default function useOptions<OptionType>(
   const valueOptions = shallowRef();
   const labelOptions = shallowRef();
   watchEffect(() => {
-    let newOptions = options.value;
+    let newOptions = toRaw(options.value);
     const childrenAsData = !options.value;
 
     if (childrenAsData) {
@@ -25,16 +25,16 @@ export default function useOptions<OptionType>(
 
     const newValueOptions = new Map<RawValueType, OptionType>();
     const newLabelOptions = new Map<any, OptionType>();
-
+    const fieldNamesValue = fieldNames.value;
     function dig(optionList: OptionType[], isChildren = false) {
       // for loop to speed up collection speed
       for (let i = 0; i < optionList.length; i += 1) {
         const option = optionList[i];
-        if (!option[fieldNames.value.options] || isChildren) {
-          newValueOptions.set(option[fieldNames.value.value], option);
-          newLabelOptions.set(option[fieldNames.value.label], option);
+        if (!option[fieldNamesValue.options] || isChildren) {
+          newValueOptions.set(option[fieldNamesValue.value], option);
+          newLabelOptions.set(option[fieldNamesValue.label], option);
         } else {
-          dig(option[fieldNames.value.options], true);
+          dig(option[fieldNamesValue.options], true);
         }
       }
     }
diff --git a/components/vc-tree-select/OptionList.tsx b/components/vc-tree-select/OptionList.tsx
index 832d6ce90f..86d66c7493 100644
--- a/components/vc-tree-select/OptionList.tsx
+++ b/components/vc-tree-select/OptionList.tsx
@@ -1,7 +1,7 @@
 import type { TreeDataNode, Key } from './interface';
 import type { RefOptionListProps } from '../vc-select/OptionList';
 import type { ScrollTo } from '../vc-virtual-list/List';
-import { computed, defineComponent, nextTick, ref, shallowRef, watch } from 'vue';
+import { computed, defineComponent, nextTick, ref, shallowRef, toRaw, watch } from 'vue';
 import useMemo from '../_util/hooks/useMemo';
 import type { EventDataNode } from '../tree';
 import KeyCode from '../_util/KeyCode';
@@ -89,7 +89,7 @@ export default defineComponent({
       () => baseProps.searchValue,
       () => {
         if (baseProps.searchValue) {
-          searchExpandedKeys.value = getAllKeys(context.treeData, context.fieldNames);
+          searchExpandedKeys.value = getAllKeys(toRaw(context.treeData), toRaw(context.fieldNames));
         }
       },
       {
@@ -98,7 +98,7 @@ export default defineComponent({
     );
     const mergedExpandedKeys = computed(() => {
       if (legacyContext.treeExpandedKeys) {
-        return [...legacyContext.treeExpandedKeys];
+        return toRaw(legacyContext.treeExpandedKeys).slice();
       }
       return baseProps.searchValue ? searchExpandedKeys.value : expandedKeys.value;
     });
diff --git a/components/vc-tree-select/TreeSelect.tsx b/components/vc-tree-select/TreeSelect.tsx
index 2b30326853..801e528054 100644
--- a/components/vc-tree-select/TreeSelect.tsx
+++ b/components/vc-tree-select/TreeSelect.tsx
@@ -29,6 +29,7 @@ import type { VueNode } from '../_util/type';
 import { conductCheck } from '../vc-tree/utils/conductUtil';
 import { warning } from '../vc-util/warning';
 import { toReactive } from '../_util/toReactive';
+import useMaxLevel from '../vc-tree/useMaxLevel';
 
 export type OnInternalSelect = (value: RawValueType, info: { selected: boolean }) => void;
 
@@ -364,13 +365,15 @@ export default defineComponent({
 
     // const [mergedValues] = useCache(rawLabeledValues);
     const rawValues = computed(() => rawLabeledValues.value.map(item => item.value));
-
+    const { maxLevel, levelEntities } = useMaxLevel(keyEntities);
     // Convert value to key. Will fill missed keys for conduct check.
     const [rawCheckedValues, rawHalfCheckedValues] = useCheckedKeys(
       rawLabeledValues,
       rawHalfLabeledValues,
       treeConduction,
       keyEntities,
+      maxLevel,
+      levelEntities,
     );
 
     // Convert rawCheckedKeys to check strategy related values
@@ -504,7 +507,9 @@ export default defineComponent({
       selectedKey: Key,
       { selected, source }: { selected: boolean; source: SelectSource },
     ) => {
-      const entity = keyEntities.value[selectedKey];
+      const keyEntitiesValue = toRaw(keyEntities.value);
+      const valueEntitiesValue = toRaw(valueEntities.value);
+      const entity = keyEntitiesValue[selectedKey];
       const node = entity?.node;
       const selectedValue = node?.[mergedFieldNames.value.value] ?? selectedKey;
 
@@ -521,24 +526,32 @@ export default defineComponent({
         if (treeConduction.value) {
           // Should keep missing values
           const { missingRawValues, existRawValues } = splitRawValues(newRawValues);
-          const keyList = existRawValues.map(val => valueEntities.value.get(val).key);
+          const keyList = existRawValues.map(val => valueEntitiesValue.get(val).key);
 
           // Conduction by selected or not
           let checkedKeys: Key[];
           if (selected) {
-            ({ checkedKeys } = conductCheck(keyList, true, keyEntities.value));
+            ({ checkedKeys } = conductCheck(
+              keyList,
+              true,
+              keyEntitiesValue,
+              maxLevel.value,
+              levelEntities.value,
+            ));
           } else {
             ({ checkedKeys } = conductCheck(
               keyList,
               { checked: false, halfCheckedKeys: rawHalfCheckedValues.value },
-              keyEntities.value,
+              keyEntitiesValue,
+              maxLevel.value,
+              levelEntities.value,
             ));
           }
 
           // Fill back of keys
           newRawValues = [
             ...missingRawValues,
-            ...checkedKeys.map(key => keyEntities.value[key].node[mergedFieldNames.value.value]),
+            ...checkedKeys.map(key => keyEntitiesValue[key].node[mergedFieldNames.value.value]),
           ];
         }
         triggerChange(newRawValues, { selected, triggerValue: selectedValue }, source || 'option');
diff --git a/components/vc-tree-select/hooks/useCache.ts b/components/vc-tree-select/hooks/useCache.ts
index fa2814533e..326fd94d97 100644
--- a/components/vc-tree-select/hooks/useCache.ts
+++ b/components/vc-tree-select/hooks/useCache.ts
@@ -1,5 +1,5 @@
 import type { Ref } from 'vue';
-import { computed, shallowRef } from 'vue';
+import { toRaw, computed, shallowRef } from 'vue';
 import type { LabeledValueType, RawValueType } from '../TreeSelect';
 
 /**
@@ -15,7 +15,7 @@ export default (values: Ref<LabeledValueType[]>): [Ref<LabeledValueType[]>] => {
     const { valueLabels } = cacheRef.value;
     const valueLabelsCache = new Map<RawValueType, any>();
 
-    const filledValues = values.value.map(item => {
+    const filledValues = toRaw(values.value).map(item => {
       const { value } = item;
       const mergedLabel = item.label ?? valueLabels.get(value);
 
diff --git a/components/vc-tree-select/hooks/useCheckedKeys.ts b/components/vc-tree-select/hooks/useCheckedKeys.ts
index ad1eace6a5..4b9552ad6a 100644
--- a/components/vc-tree-select/hooks/useCheckedKeys.ts
+++ b/components/vc-tree-select/hooks/useCheckedKeys.ts
@@ -2,26 +2,36 @@ import type { Key } from '../../_util/type';
 import type { DataEntity } from '../../vc-tree/interface';
 import { conductCheck } from '../../vc-tree/utils/conductUtil';
 import type { LabeledValueType, RawValueType } from '../TreeSelect';
-import type { Ref } from 'vue';
-import { shallowRef, watchEffect } from 'vue';
+import type { Ref, ShallowRef } from 'vue';
+import { toRaw, shallowRef, watchEffect } from 'vue';
 
 export default (
   rawLabeledValues: Ref<LabeledValueType[]>,
   rawHalfCheckedValues: Ref<LabeledValueType[]>,
   treeConduction: Ref<boolean>,
   keyEntities: Ref<Record<Key, DataEntity>>,
+  maxLevel: Ref<number>,
+  levelEntities: ShallowRef<Map<number, Set<DataEntity>>>,
 ) => {
   const newRawCheckedValues = shallowRef<RawValueType[]>([]);
   const newRawHalfCheckedValues = shallowRef<RawValueType[]>([]);
 
   watchEffect(() => {
-    let checkedKeys: RawValueType[] = rawLabeledValues.value.map(({ value }) => value);
-    let halfCheckedKeys: RawValueType[] = rawHalfCheckedValues.value.map(({ value }) => value);
+    let checkedKeys: RawValueType[] = toRaw(rawLabeledValues.value).map(({ value }) => value);
+    let halfCheckedKeys: RawValueType[] = toRaw(rawHalfCheckedValues.value).map(
+      ({ value }) => value,
+    );
 
     const missingValues = checkedKeys.filter(key => !keyEntities.value[key]);
 
     if (treeConduction.value) {
-      ({ checkedKeys, halfCheckedKeys } = conductCheck(checkedKeys, true, keyEntities.value));
+      ({ checkedKeys, halfCheckedKeys } = conductCheck(
+        checkedKeys,
+        true,
+        keyEntities.value,
+        maxLevel.value,
+        levelEntities.value,
+      ));
     }
     newRawCheckedValues.value = Array.from(new Set([...missingValues, ...checkedKeys]));
     newRawHalfCheckedValues.value = halfCheckedKeys;
diff --git a/components/vc-tree-select/hooks/useDataEntities.ts b/components/vc-tree-select/hooks/useDataEntities.ts
index 6756a9fb51..31be826a89 100644
--- a/components/vc-tree-select/hooks/useDataEntities.ts
+++ b/components/vc-tree-select/hooks/useDataEntities.ts
@@ -4,21 +4,22 @@ import type { FieldNames, RawValueType } from '../TreeSelect';
 
 import { isNil } from '../utils/valueUtil';
 import type { Ref } from 'vue';
-import { ref, watchEffect } from 'vue';
+import { toRaw, ref, watchEffect } from 'vue';
 import { warning } from '../../vc-util/warning';
 
 export default (treeData: Ref<any>, fieldNames: Ref<FieldNames>) => {
   const valueEntities = ref<Map<RawValueType, DataEntity>>(new Map());
   const keyEntities = ref<Record<string, DataEntity>>({});
   watchEffect(() => {
-    const collection = convertDataToEntities(treeData.value, {
-      fieldNames: fieldNames.value,
+    const fieldNamesValue = fieldNames.value;
+    const collection = convertDataToEntities(toRaw(treeData.value), {
+      fieldNames: fieldNamesValue,
       initWrapper: wrapper => ({
         ...wrapper,
         valueEntities: new Map(),
       }),
       processEntity: (entity, wrapper: any) => {
-        const val = entity.node[fieldNames.value.value];
+        const val = entity.node[fieldNamesValue.value];
 
         // Check if exist same value
         if (process.env.NODE_ENV !== 'production') {
diff --git a/components/vc-tree-select/hooks/useFilterTreeData.ts b/components/vc-tree-select/hooks/useFilterTreeData.ts
index 5f19b10aaf..409b5a6438 100644
--- a/components/vc-tree-select/hooks/useFilterTreeData.ts
+++ b/components/vc-tree-select/hooks/useFilterTreeData.ts
@@ -1,5 +1,5 @@
 import type { Ref } from 'vue';
-import { computed } from 'vue';
+import { toRaw, computed } from 'vue';
 import type { DefaultOptionType, InternalFieldName, TreeSelectProps } from '../TreeSelect';
 import { fillLegacyProps } from '../utils/legacyUtil';
 
@@ -21,7 +21,9 @@ export default (
 ) => {
   return computed(() => {
     const { children: fieldChildren } = fieldNames.value;
-    if (!searchValue.value || filterTreeNode.value === false) {
+    const searchValueVal = searchValue.value;
+    const treeNodeFilterPropValue = treeNodeFilterProp?.value;
+    if (!searchValueVal || filterTreeNode.value === false) {
       return treeData.value;
     }
 
@@ -29,33 +31,49 @@ export default (
     if (typeof filterTreeNode.value === 'function') {
       filterOptionFunc = filterTreeNode.value;
     } else {
-      const upperStr = searchValue.value.toUpperCase();
+      const upperStr = searchValueVal.toUpperCase();
       filterOptionFunc = (_, dataNode) => {
-        const value = dataNode[treeNodeFilterProp.value];
+        const value = dataNode[treeNodeFilterPropValue];
 
         return String(value).toUpperCase().includes(upperStr);
       };
     }
 
     function dig(list: DefaultOptionType[], keepAll = false) {
-      return list
-        .map(dataNode => {
-          const children = dataNode[fieldChildren];
-
-          const match = keepAll || filterOptionFunc(searchValue.value, fillLegacyProps(dataNode));
-          const childList = dig(children || [], match);
-
-          if (match || childList.length) {
-            return {
-              ...dataNode,
-              [fieldChildren]: childList,
-            };
-          }
-          return null;
-        })
-        .filter(node => node);
+      const res = [];
+      for (let index = 0, len = list.length; index < len; index++) {
+        const dataNode = list[index];
+        const children = dataNode[fieldChildren];
+
+        const match = keepAll || filterOptionFunc(searchValueVal, fillLegacyProps(dataNode));
+        const childList = dig(children || [], match);
+
+        if (match || childList.length) {
+          res.push({
+            ...dataNode,
+            [fieldChildren]: childList,
+          });
+        }
+      }
+      return res;
+      // return list
+      //   .map(dataNode => {
+      //     const children = dataNode[fieldChildren];
+
+      //     const match = keepAll || filterOptionFunc(searchValueVal, fillLegacyProps(dataNode));
+      //     const childList = dig(children || [], match);
+
+      //     if (match || childList.length) {
+      //       return {
+      //         ...dataNode,
+      //         [fieldChildren]: childList,
+      //       };
+      //     }
+      //     return null;
+      //   })
+      //   .filter(node => node);
     }
 
-    return dig(treeData.value);
+    return dig(toRaw(treeData.value));
   });
 };
diff --git a/components/vc-tree-select/hooks/useTreeData.ts b/components/vc-tree-select/hooks/useTreeData.ts
index fe4ff36fcf..4fde7c8a43 100644
--- a/components/vc-tree-select/hooks/useTreeData.ts
+++ b/components/vc-tree-select/hooks/useTreeData.ts
@@ -1,5 +1,5 @@
 import type { Ref } from 'vue';
-import { computed } from 'vue';
+import { toRaw, computed } from 'vue';
 import type { DataNode, SimpleModeConfig } from '../interface';
 import { convertChildrenToData } from '../utils/legacyUtil';
 import type { DefaultOptionType } from '../TreeSelect';
@@ -51,17 +51,18 @@ export default function useTreeData(
   simpleMode: Ref<boolean | SimpleModeConfig>,
 ): Ref<DefaultOptionType[]> {
   return computed(() => {
+    const simpleModeValue = simpleMode.value;
     if (treeData.value) {
       return simpleMode.value
-        ? parseSimpleTreeData(treeData.value, {
+        ? parseSimpleTreeData(toRaw(treeData.value), {
             id: 'id',
             pId: 'pId',
             rootPId: null,
-            ...(simpleMode.value !== true ? simpleMode.value : {}),
+            ...(simpleModeValue !== true ? simpleModeValue : {}),
           })
         : treeData.value;
     }
 
-    return convertChildrenToData(children.value);
+    return convertChildrenToData(toRaw(children.value));
   });
 }
diff --git a/components/vc-tree/Tree.tsx b/components/vc-tree/Tree.tsx
index d27185c400..6247508ad0 100644
--- a/components/vc-tree/Tree.tsx
+++ b/components/vc-tree/Tree.tsx
@@ -32,6 +32,7 @@ import {
   watch,
   watchEffect,
   nextTick,
+  toRaw,
 } from 'vue';
 import initDefaultProps from '../_util/props-util/initDefaultProps';
 import type { CheckInfo, DraggableFn } from './props';
@@ -40,6 +41,7 @@ import { warning } from '../vc-util/warning';
 import KeyCode from '../_util/KeyCode';
 import classNames from '../_util/classNames';
 import pickAttrs from '../_util/pickAttrs';
+import useMaxLevel from './useMaxLevel';
 
 const MAX_RETRY_TIMES = 10;
 
@@ -101,8 +103,12 @@ export default defineComponent({
       // abstract-drag-over-node is the top node
       dragOverNodeKey: null,
     });
-    const treeData = computed(() => {
-      return props.treeData !== undefined ? props.treeData : convertTreeToData(props.children);
+    const treeData = shallowRef([]);
+    watchEffect(() => {
+      treeData.value =
+        props.treeData !== undefined
+          ? toRaw(props.treeData)
+          : convertTreeToData(toRaw(props.children));
     });
     const keyEntities = shallowRef({});
 
@@ -137,7 +143,9 @@ export default defineComponent({
 
     watchEffect(() => {
       if (treeData.value) {
-        const entitiesMap = convertDataToEntities(treeData.value, { fieldNames: fieldNames.value });
+        const entitiesMap = convertDataToEntities(toRaw(treeData.value), {
+          fieldNames: fieldNames.value,
+        });
         keyEntities.value = {
           [MOTION_KEY]: MotionEntity,
           ...entitiesMap.keyEntities,
@@ -180,32 +188,37 @@ export default defineComponent({
     );
 
     // ================ flattenNodes =================
-    const flattenNodes = computed(() => {
-      return flattenTreeData(treeData.value, expandedKeys.value, fieldNames.value);
+    const flattenNodes = shallowRef([]);
+    watchEffect(() => {
+      flattenNodes.value = flattenTreeData(
+        toRaw(treeData.value),
+        toRaw(expandedKeys.value),
+        fieldNames.value,
+      );
     });
     // ================ selectedKeys =================
     watchEffect(() => {
       if (props.selectable) {
         if (props.selectedKeys !== undefined) {
-          selectedKeys.value = calcSelectedKeys(props.selectedKeys, props);
+          selectedKeys.value = calcSelectedKeys(toRaw(props.selectedKeys), props);
         } else if (!init && props.defaultSelectedKeys) {
-          selectedKeys.value = calcSelectedKeys(props.defaultSelectedKeys, props);
+          selectedKeys.value = calcSelectedKeys(toRaw(props.defaultSelectedKeys), props);
         }
       }
     });
-
+    const { maxLevel, levelEntities } = useMaxLevel(keyEntities);
     // ================= checkedKeys =================
     watchEffect(() => {
       if (props.checkable) {
         let checkedKeyEntity;
 
         if (props.checkedKeys !== undefined) {
-          checkedKeyEntity = parseCheckedKeys(props.checkedKeys) || {};
+          checkedKeyEntity = parseCheckedKeys(toRaw(props.checkedKeys)) || {};
         } else if (!init && props.defaultCheckedKeys) {
-          checkedKeyEntity = parseCheckedKeys(props.defaultCheckedKeys) || {};
+          checkedKeyEntity = parseCheckedKeys(toRaw(props.defaultCheckedKeys)) || {};
         } else if (treeData.value) {
           // If `treeData` changed, we also need check it
-          checkedKeyEntity = parseCheckedKeys(props.checkedKeys) || {
+          checkedKeyEntity = parseCheckedKeys(toRaw(props.checkedKeys)) || {
             checkedKeys: checkedKeys.value,
             halfCheckedKeys: halfCheckedKeys.value,
           };
@@ -216,7 +229,13 @@ export default defineComponent({
             checkedKeyEntity;
 
           if (!props.checkStrictly) {
-            const conductKeys = conductCheck(newCheckedKeys, true, keyEntities.value);
+            const conductKeys = conductCheck(
+              newCheckedKeys,
+              true,
+              keyEntities.value,
+              maxLevel.value,
+              levelEntities.value,
+            );
             ({ checkedKeys: newCheckedKeys, halfCheckedKeys: newHalfCheckedKeys } = conductKeys);
           }
 
@@ -399,7 +418,7 @@ export default defineComponent({
         delayedDragEnterLogic[pos] = window.setTimeout(() => {
           if (dragState.draggingNodeKey === null) return;
 
-          let newExpandedKeys = [...expandedKeys.value];
+          let newExpandedKeys = expandedKeys.value.slice();
           const entity = keyEntities.value[node.eventKey];
 
           if (entity && (entity.children || []).length) {
@@ -549,7 +568,7 @@ export default defineComponent({
 
       if (dropTargetKey === null) return;
       const abstractDropNodeProps = {
-        ...getTreeNodeProps(dropTargetKey, treeNodeRequiredProps.value),
+        ...getTreeNodeProps(dropTargetKey, toRaw(treeNodeRequiredProps.value)),
         active: activeItem.value?.key === dropTargetKey,
         data: keyEntities.value[dropTargetKey].node,
       };
@@ -646,7 +665,7 @@ export default defineComponent({
         checked,
         nativeEvent: e,
       };
-
+      const keyEntitiesValue = keyEntities.value;
       if (checkStrictly) {
         const newCheckedKeys = checked
           ? arrAdd(checkedKeys.value, key)
@@ -654,7 +673,6 @@ export default defineComponent({
         const newHalfCheckedKeys = arrDel(halfCheckedKeys.value, key);
         checkedObj = { checked: newCheckedKeys, halfChecked: newHalfCheckedKeys };
 
-        const keyEntitiesValue = keyEntities.value;
         eventObj.checkedNodes = newCheckedKeys
           .map(checkedKey => keyEntitiesValue[checkedKey])
           .filter(entity => entity)
@@ -668,7 +686,9 @@ export default defineComponent({
         let { checkedKeys: newCheckedKeys, halfCheckedKeys: newHalfCheckedKeys } = conductCheck(
           [...checkedKeys.value, key],
           true,
-          keyEntities.value,
+          keyEntitiesValue,
+          maxLevel.value,
+          levelEntities.value,
         );
 
         // If remove, we do it again to correction
@@ -678,7 +698,9 @@ export default defineComponent({
           ({ checkedKeys: newCheckedKeys, halfCheckedKeys: newHalfCheckedKeys } = conductCheck(
             Array.from(keySet),
             { checked: false, halfCheckedKeys: newHalfCheckedKeys },
-            keyEntities.value,
+            keyEntitiesValue,
+            maxLevel.value,
+            levelEntities.value,
           ));
         }
 
@@ -689,7 +711,7 @@ export default defineComponent({
         eventObj.checkedNodesPositions = [];
         eventObj.halfCheckedKeys = newHalfCheckedKeys;
         newCheckedKeys.forEach(checkedKey => {
-          const entity = keyEntities.value[checkedKey];
+          const entity = keyEntitiesValue[checkedKey];
           if (!entity) return;
 
           const { node, pos } = entity;
@@ -906,7 +928,6 @@ export default defineComponent({
 
     const offsetActiveKey = (offset: number) => {
       let index = flattenNodes.value.findIndex(({ key }) => key === activeKey.value);
-
       // Align with index
       if (index === -1 && offset < 0) {
         index = flattenNodes.value.length;
diff --git a/components/vc-tree/useMaxLevel.ts b/components/vc-tree/useMaxLevel.ts
new file mode 100644
index 0000000000..ca2942a012
--- /dev/null
+++ b/components/vc-tree/useMaxLevel.ts
@@ -0,0 +1,38 @@
+import type { ShallowRef } from 'vue';
+import { shallowRef, ref, watchEffect } from 'vue';
+import type { BasicDataNode, DataEntity, DataNode, Key } from './interface';
+
+export default function useMaxLevel<TreeDataType extends BasicDataNode = DataNode>(
+  keyEntities: ShallowRef<Record<Key, DataEntity<TreeDataType>>>,
+) {
+  const maxLevel = ref(0);
+  const levelEntities = shallowRef<Map<number, Set<DataEntity<TreeDataType>>>>();
+  watchEffect(() => {
+    const newLevelEntities = new Map<number, Set<DataEntity<TreeDataType>>>();
+    let newMaxLevel = 0;
+    const keyEntitiesValue = keyEntities.value || {};
+    // Convert entities by level for calculation
+    for (const key in keyEntitiesValue) {
+      if (Object.prototype.hasOwnProperty.call(keyEntitiesValue, key)) {
+        const entity = keyEntitiesValue[key];
+        const { level } = entity;
+
+        let levelSet: Set<DataEntity<TreeDataType>> = newLevelEntities.get(level);
+        if (!levelSet) {
+          levelSet = new Set();
+          newLevelEntities.set(level, levelSet);
+        }
+
+        levelSet.add(entity);
+
+        newMaxLevel = Math.max(newMaxLevel, level);
+      }
+    }
+    maxLevel.value = newMaxLevel;
+    levelEntities.value = newLevelEntities;
+  });
+  return {
+    maxLevel,
+    levelEntities,
+  };
+}
diff --git a/components/vc-tree/utils/conductUtil.ts b/components/vc-tree/utils/conductUtil.ts
index ed751be194..4e4389e384 100644
--- a/components/vc-tree/utils/conductUtil.ts
+++ b/components/vc-tree/utils/conductUtil.ts
@@ -186,6 +186,8 @@ export function conductCheck<TreeDataType extends BasicDataNode = DataNode>(
   keyList: Key[],
   checked: true | { checked: false; halfCheckedKeys: Key[] },
   keyEntities: Record<Key, DataEntity<TreeDataType>>,
+  maxLevel: number,
+  levelEntities: Map<number, Set<DataEntity<TreeDataType>>>,
   getCheckDisabled?: GetCheckDisabled<TreeDataType>,
 ): ConductReturnType {
   const warningMissKeys: Key[] = [];
@@ -208,24 +210,6 @@ export function conductCheck<TreeDataType extends BasicDataNode = DataNode>(
       return hasEntity;
     }),
   );
-  const levelEntities = new Map<number, Set<DataEntity<TreeDataType>>>();
-  let maxLevel = 0;
-
-  // Convert entities by level for calculation
-  Object.keys(keyEntities).forEach(key => {
-    const entity = keyEntities[key];
-    const { level } = entity;
-
-    let levelSet: Set<DataEntity<TreeDataType>> = levelEntities.get(level);
-    if (!levelSet) {
-      levelSet = new Set();
-      levelEntities.set(level, levelSet);
-    }
-
-    levelSet.add(entity);
-
-    maxLevel = Math.max(maxLevel, level);
-  });
 
   warning(
     !warningMissKeys.length,