diff --git a/packages/extension/src/browser/vscode/api/main.thread.output.ts b/packages/extension/src/browser/vscode/api/main.thread.output.ts
index 05f7ceafe8..da32461fd5 100644
--- a/packages/extension/src/browser/vscode/api/main.thread.output.ts
+++ b/packages/extension/src/browser/vscode/api/main.thread.output.ts
@@ -40,6 +40,14 @@ export class MainThreadOutput implements IMainThreadOutput {
     return Promise.resolve();
   }
 
+  $appendLine(channelName: string, value: string): PromiseLike<void> {
+    const outputChannel = this.getChannel(channelName);
+    if (outputChannel) {
+      outputChannel.appendLine(value);
+    }
+    return Promise.resolve();
+  }
+
   $clear(channelName: string): PromiseLike<void> {
     const outputChannel = this.getChannel(channelName);
     if (outputChannel) {
diff --git a/packages/extension/src/common/vscode/window.ts b/packages/extension/src/common/vscode/window.ts
index e36c831e61..6ffbce021f 100644
--- a/packages/extension/src/common/vscode/window.ts
+++ b/packages/extension/src/common/vscode/window.ts
@@ -182,6 +182,7 @@ export interface IExtHostStatusBar {
 
 export interface IMainThreadOutput {
   $append(channelName: string, value: string): PromiseLike<void>;
+  $appendLine(channelName: string, value: string): PromiseLike<void>;
   $replace(channelName: string, value: string): PromiseLike<void>;
   $clear(channelName: string): PromiseLike<void>;
   $dispose(channelName: string): PromiseLike<void>;
diff --git a/packages/extension/src/hosted/api/vscode/ext.host.output.ts b/packages/extension/src/hosted/api/vscode/ext.host.output.ts
index 3038094751..30016ed1af 100644
--- a/packages/extension/src/hosted/api/vscode/ext.host.output.ts
+++ b/packages/extension/src/hosted/api/vscode/ext.host.output.ts
@@ -95,7 +95,7 @@ export class OutputChannelImpl implements types.OutputChannel {
 
   appendLine(value: string): void {
     this.validate();
-    this.append(value + '\n');
+    this.#proxy.$appendLine(this.name, value);
   }
 
   clear(): void {
@@ -161,22 +161,15 @@ export class LogOutputChannelImpl extends OutputChannelImpl implements types.Log
   }
 
   private now(): string {
+    const twoDigits = (v: number) => (v < 10 ? `0${v}` : v);
+    const threeDigits = (v: number) => (v < 10 ? `00${v}` : v < 100 ? `0${v}` : v);
+
     const now = new Date();
-    return (
-      padLeft(now.getFullYear() + '', 4, '0') +
-      '-' +
-      padLeft(now.getMonth() + 1 + '', 2, '0') +
-      '-' +
-      padLeft(now.getDate() + '', 2, '0') +
-      ' ' +
-      padLeft(now.getUTCHours() + '', 2, '0') +
-      ':' +
-      padLeft(now.getMinutes() + '', 2, '0') +
-      ':' +
-      padLeft(now.getUTCSeconds() + '', 2, '0') +
-      '.' +
-      now.getMilliseconds()
-    );
+    const date = `${now.getFullYear()}-${twoDigits(now.getMonth() + 1)}-${twoDigits(now.getDate())}`;
+    const time = `${twoDigits(now.getHours())}:${twoDigits(now.getMinutes())}:${twoDigits(
+      now.getSeconds(),
+    )}.${threeDigits(now.getMilliseconds())}`;
+    return `${date} ${time}`;
   }
 
   private label(level: types.OutputChannelLogLevel) {
@@ -197,7 +190,7 @@ export class LogOutputChannelImpl extends OutputChannelImpl implements types.Log
   }
 
   private logWithLevel(level: types.OutputChannelLogLevel, message: string, data?: any): void {
-    this.append(`${this.now()} [${this.label(level)}] ${message}`);
+    this.appendLine(`${this.now()} [${this.label(level)}] ${message}`);
     if (data) {
       this.append(this.data2String(data));
     }
@@ -223,7 +216,3 @@ export class LogOutputChannelImpl extends OutputChannelImpl implements types.Log
     this.logWithLevel(types.OutputChannelLogLevel.Error, error.toString(), args);
   }
 }
-
-function padLeft(s: string, n: number, pad = ' ') {
-  return pad.repeat(Math.max(0, n - s.length)) + s;
-}
diff --git a/packages/output/src/browser/output.channel.ts b/packages/output/src/browser/output.channel.ts
index 243644fcc4..e1ab842ad3 100644
--- a/packages/output/src/browser/output.channel.ts
+++ b/packages/output/src/browser/output.channel.ts
@@ -6,6 +6,7 @@ import { IEditorDocumentModelRef, IEditorDocumentModelService } from '@opensumi/
 import { IMainLayoutService } from '@opensumi/ide-main-layout';
 import * as monaco from '@opensumi/ide-monaco';
 import { ITextModel } from '@opensumi/ide-monaco/lib/browser/monaco-api/types';
+import { EditOperation } from '@opensumi/monaco-editor-core/esm/vs/editor/common/core/editOperation';
 
 import { ContentChangeEvent, ContentChangeEventPayload, ContentChangeType } from '../common';
 
@@ -117,21 +118,11 @@ export class OutputChannel extends Disposable {
     this.monacoModel.setValue(value);
   }
 
-  private pushEditOperations(value: string): void {
-    const lineCount = this.monacoModel.getLineCount();
-    const character = value.length;
-    // 用 pushEditOperations 插入文本，直接替换 content 会触发重新计算高亮
-    this.monacoModel.pushEditOperations(
-      [],
-      [
-        {
-          range: new monaco.Range(lineCount, 0, lineCount + 1, character),
-          text: value,
-          forceMoveMarkers: true,
-        },
-      ],
-      () => [],
-    );
+  private applyEdits(value: string): void {
+    const lastLine = this.monacoModel.getLineCount();
+    const lastLineMaxColumn = this.monacoModel.getLineMaxColumn(lastLine);
+    const edits = [EditOperation.insert(new monaco.Position(lastLine, lastLineMaxColumn), value)];
+    this.monacoModel.applyEdits(edits);
   }
 
   private isEmptyChannel(): boolean {
@@ -149,7 +140,7 @@ export class OutputChannel extends Disposable {
       if (this.isEmptyChannel() || needSlice) {
         this.doReplace(this.outputLines.join('') + value);
       } else {
-        this.pushEditOperations(value);
+        this.applyEdits(value);
       }
       this.outputLines.push(value);
     });