diff --git a/problems/算法模板.md b/problems/算法模板.md
index 853816d2..69ebb361 100644
--- a/problems/算法模板.md
+++ b/problems/算法模板.md
@@ -460,7 +460,7 @@ var levelOrder = function (root) {
         for (let i = 0; i < n; i++) {
             let node = queue.shift();
             temp.push(node.val);
-            node.left &&queue.push(node.left);
+            node.left && queue.push(node.left);
             node.right && queue.push(node.right);
         }
         res.push(temp);