diff --git a/docs/zh/renderer-diff.md b/docs/zh/renderer-diff.md
index 969cc65a..bfd8c56b 100644
--- a/docs/zh/renderer-diff.md
+++ b/docs/zh/renderer-diff.md
@@ -767,7 +767,7 @@ while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
     patch(oldEndVNode, newEndVNode, container)
     // 更新索引，指向下一个位置
     oldEndVNode = prevChildren[--oldEndIdx]
-    newEndVNode = newEndVNode[--newEndIdx]
+    newEndVNode = nextChildren[--newEndIdx]
   } else if (oldStartVNode.key === newEndVNode.key) {
     // 步骤三：oldStartVNode 和 newEndVNode 比对