diff --git a/libs/horizon/src/renderer/diff/nodeDiffComparator.ts b/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
index 9334116f..183e6dd9 100644
--- a/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
+++ b/libs/horizon/src/renderer/diff/nodeDiffComparator.ts
@@ -55,7 +55,7 @@ function deleteVNodes(parentVNode: VNode, startDelVNode: VNode | null, endVNode?
   }
 }
 
-function checkCanReuseNode(oldNode: VNode | null, newChild: any): boolean {
+function checkCanReuseNode(oldNode: VNode | null, newChild: any, newNodeIdx: number): boolean {
   if (newChild === null) {
     return false;
   }
@@ -70,7 +70,12 @@ function checkCanReuseNode(oldNode: VNode | null, newChild: any): boolean {
       return oldKey === null;
     }
     if (newChild.vtype === TYPE_COMMON_ELEMENT || newChild.vtype === TYPE_PORTAL) {
-      return oldKey === newChild.key;
+      if(oldKey || newChild.key) {
+        return oldKey === newChild.key;
+      } else {
+        // 新旧节点的index应该相同才能复用，null会影响位置
+        return oldNode?.eIndex === newNodeIdx;
+      }
     }
   }
 
@@ -254,7 +259,7 @@ function diffArrayNodesHandler(
       nextOldNode = oldNode.next;
     }
 
-    canBeReuse = checkCanReuseNode(oldNode, newChildren[leftIdx]);
+    canBeReuse = checkCanReuseNode(oldNode, newChildren[leftIdx], leftIdx);
     // 不能复用，break
     if (!canBeReuse) {
       oldNode = oldNode ?? nextOldNode;
@@ -294,9 +299,8 @@ function diffArrayNodesHandler(
       if (rightOldIndex < 0 || rightOldNode === null) {
         break;
       }
-      // 新旧节点的index应该相同才能复用，null会影响位置
-      const samePosition = rightOldNode.eIndex === rightIdx - 1;
-      canBeReuse = checkCanReuseNode(rightOldNode, newChildren[rightIdx - 1]) && samePosition;
+
+      canBeReuse = checkCanReuseNode(rightOldNode, newChildren[rightIdx - 1], rightIdx - 1);
       // 不能复用，break
       if (!canBeReuse) {
         break;