diff --git a/notes/面试总结.md b/notes/面试总结.md
index c83951f4..a03e93d3 100644
--- a/notes/面试总结.md
+++ b/notes/面试总结.md
@@ -475,15 +475,15 @@ private TreeNode reConstructBinaryTree(int[] pre, int preL, int preR, int inL) {
 
 ```python
 # 返回构造的TreeNode根节点
-    def reConstructBinaryTree(self, pre, tin):
-        # write code here
-        if not pre or not tin:
-            return None
-        root = TreeNode(pre.pop(0))
-        index = tin.index(root.val)
-        root.left = self.reConstructBinaryTree(pre, tin[:index])
-        root.right = self.reConstructBinaryTree(pre, tin[index + 1:])
-        return root
+def reConstructBinaryTree(self, pre, tin):
+    # write code here
+    if not pre or not tin:
+        return None
+    root = TreeNode(pre.pop(0))
+    index = tin.index(root.val)
+    root.left = self.reConstructBinaryTree(pre, tin[:index])
+    root.right = self.reConstructBinaryTree(pre, tin[index + 1:])
+    return root
 ```
 
 # 8. 二叉树的下一个结点