diff --git a/hugegraph-core/src/main/java/com/baidu/hugegraph/backend/query/ConditionQuery.java b/hugegraph-core/src/main/java/com/baidu/hugegraph/backend/query/ConditionQuery.java
index d7a6cbedd1..66cc66d181 100644
--- a/hugegraph-core/src/main/java/com/baidu/hugegraph/backend/query/ConditionQuery.java
+++ b/hugegraph-core/src/main/java/com/baidu/hugegraph/backend/query/ConditionQuery.java
@@ -242,6 +242,11 @@ public <T> T condition(Object key) {
             T value = (T) valuesEQ.get(0);
             return value;
         }
+        if (valuesEQ.size() == 0 && valuesIN.size() == 1) {
+            @SuppressWarnings("unchecked")
+            T value = (T) valuesIN.get(0);
+            return value;
+        }
 
         Set<Object> intersectValues = InsertionOrderUtil.newSet();
         for (Object value : valuesEQ) {
@@ -263,6 +268,12 @@ public <T> T condition(Object key) {
                                                    valueAsList);
             }
         }
+
+        if (valuesIN.size() > 0) {
+            @SuppressWarnings("unchecked")
+            T value = (T) intersectValues;
+            return value;
+        }
         E.checkState(intersectValues.size() == 1,
                      "Illegal key '%s' with more than one value: %s",
                      key, intersectValues);