diff --git a/codes/python/chapter_tree/avl_tree.py b/codes/python/chapter_tree/avl_tree.py
index 6fe4676fc..27def6274 100644
--- a/codes/python/chapter_tree/avl_tree.py
+++ b/codes/python/chapter_tree/avl_tree.py
@@ -15,11 +15,7 @@ class AVLTree:
 
     def __init__(self, root: TreeNode | None = None):
         """构造方法"""
-        self.__root = root
-
-    @property
-    def root(self) -> TreeNode | None:
-        return self.__root
+        self.root = root
 
     def height(self, node: TreeNode | None) -> int:
         """获取节点高度"""
@@ -94,7 +90,7 @@ class AVLTree:
 
     def insert(self, val) -> None:
         """插入节点"""
-        self.__root = self.__insert_helper(self.__root, val)
+        self.root = self.__insert_helper(self.root, val)
 
     def __insert_helper(self, node: TreeNode | None, val: int) -> TreeNode:
         """递归插入节点（辅助方法）"""
@@ -115,7 +111,7 @@ class AVLTree:
 
     def remove(self, val: int) -> None:
         """删除节点"""
-        self.__root = self.__remove_helper(self.__root, val)
+        self.root = self.__remove_helper(self.root, val)
 
     def __remove_helper(self, node: TreeNode | None, val: int) -> TreeNode | None:
         """递归删除节点（辅助方法）"""
@@ -149,7 +145,7 @@ class AVLTree:
 
     def search(self, val: int) -> TreeNode | None:
         """查找节点"""
-        cur = self.__root
+        cur = self.root
         # 循环查找，越过叶节点后跳出
         while cur is not None:
             # 目标节点在 cur 的右子树中
diff --git a/codes/python/chapter_tree/binary_search_tree.py b/codes/python/chapter_tree/binary_search_tree.py
index 4384f817c..d34496af8 100644
--- a/codes/python/chapter_tree/binary_search_tree.py
+++ b/codes/python/chapter_tree/binary_search_tree.py
@@ -16,7 +16,7 @@ class BinarySearchTree:
     def __init__(self, nums: list[int]) -> None:
         """构造方法"""
         nums.sort()
-        self.__root = self.build_tree(nums, 0, len(nums) - 1)
+        self.root = self.build_tree(nums, 0, len(nums) - 1)
 
     def build_tree(
         self, nums: list[int], start_index: int, end_index: int
@@ -37,10 +37,6 @@ class BinarySearchTree:
         )
         return root
 
-    @property
-    def root(self) -> TreeNode | None:
-        return self.__root
-
     def search(self, num: int) -> TreeNode | None:
         """查找节点"""
         cur: TreeNode | None = self.root
@@ -119,7 +115,7 @@ class BinarySearchTree:
                     pre.right = child
             else:
                 # 若删除节点为根节点，则重新指定根节点
-                self.__root = child
+                self.root = child
         # 子节点数量 = 2
         else:
             # 获取中序遍历中 cur 的下一个节点
diff --git a/docs/chapter_computational_complexity/index.md b/docs/chapter_computational_complexity/index.md
index 80bc79982..54af4cbd8 100644
--- a/docs/chapter_computational_complexity/index.md
+++ b/docs/chapter_computational_complexity/index.md
@@ -1,7 +1,7 @@
-# 复杂度分析
+# 复杂度
 
 <div class="center-table" markdown>
 
-![复杂度分析](../assets/covers/chapter_complexity_analysis.jpg){ width="70%" }
+![复杂度](../assets/covers/chapter_complexity_analysis.jpg){ width="70%" }
 
 </div>
diff --git a/docs/chapter_data_structure/index.md b/docs/chapter_data_structure/index.md
index 57c75245a..1f5d9eec3 100644
--- a/docs/chapter_data_structure/index.md
+++ b/docs/chapter_data_structure/index.md
@@ -1,4 +1,4 @@
-# 数据结构简介
+# 数据结构
 
 <div class="center-table" markdown>