diff --git a/codes/cpp/chapter_tree/binary_search_tree.cpp b/codes/cpp/chapter_tree/binary_search_tree.cpp
index 246bdbaa1..648e194ae 100644
--- a/codes/cpp/chapter_tree/binary_search_tree.cpp
+++ b/codes/cpp/chapter_tree/binary_search_tree.cpp
@@ -131,7 +131,7 @@ int main() {
     PrintUtil::printTree(bst->getRoot());
 
     /* 查找结点 */
-    TreeNode* node = bst->search(5);
+    TreeNode* node = bst->search(7);
     cout << endl << "查找到的结点对象为 " << node << "，结点值 = " << node->val << endl;
 
     /* 插入结点 */
diff --git a/codes/csharp/chapter_tree/binary_search_tree.cs b/codes/csharp/chapter_tree/binary_search_tree.cs
index 8224317df..3cb991486 100644
--- a/codes/csharp/chapter_tree/binary_search_tree.cs
+++ b/codes/csharp/chapter_tree/binary_search_tree.cs
@@ -163,7 +163,7 @@ namespace hello_algo.chapter_tree
             PrintUtil.PrintTree(bst.getRoot());
 
             /* 查找结点 */
-            TreeNode? node = bst.search(5);
+            TreeNode? node = bst.search(7);
             Console.WriteLine("\n查找到的结点对象为 " + node + "，结点值 = " + node.val);
 
             /* 插入结点 */
diff --git a/codes/java/chapter_tree/binary_search_tree.java b/codes/java/chapter_tree/binary_search_tree.java
index 0770c567d..1755df56b 100644
--- a/codes/java/chapter_tree/binary_search_tree.java
+++ b/codes/java/chapter_tree/binary_search_tree.java
@@ -131,7 +131,7 @@ public class binary_search_tree {
         PrintUtil.printTree(bst.getRoot());
 
         /* 查找结点 */
-        TreeNode node = bst.search(5);
+        TreeNode node = bst.search(7);
         System.out.println("\n查找到的结点对象为 " + node + "，结点值 = " + node.val);
 
         /* 插入结点 */
diff --git a/codes/javascript/chapter_tree/binary_search_tree.js b/codes/javascript/chapter_tree/binary_search_tree.js
index 1e0d92738..345cff555 100644
--- a/codes/javascript/chapter_tree/binary_search_tree.js
+++ b/codes/javascript/chapter_tree/binary_search_tree.js
@@ -126,7 +126,7 @@ console.log("\n初始化的二叉树为\n");
 printTree(getRoot());
 
 /* 查找结点 */
-let node = search(5);
+let node = search(7);
 console.log("\n查找到的结点对象为 " + node + "，结点值 = " + node.val);
 
 /* 插入结点 */
diff --git a/codes/python/chapter_tree/binary_search_tree.py b/codes/python/chapter_tree/binary_search_tree.py
index 23e341854..811b3829d 100644
--- a/codes/python/chapter_tree/binary_search_tree.py
+++ b/codes/python/chapter_tree/binary_search_tree.py
@@ -145,7 +145,7 @@ if __name__ == "__main__":
     print_tree(bst.root)
 
     # 查找结点
-    node = bst.search(5)
+    node = bst.search(7)
     print("\n查找到的结点对象为: {}，结点值 = {}".format(node, node.val))
 
     # 插入结点
diff --git a/codes/typescript/chapter_tree/binary_search_tree.ts b/codes/typescript/chapter_tree/binary_search_tree.ts
index 6dad83421..1222b8d5d 100644
--- a/codes/typescript/chapter_tree/binary_search_tree.ts
+++ b/codes/typescript/chapter_tree/binary_search_tree.ts
@@ -150,7 +150,7 @@ console.log('\n初始化的二叉树为\n');
 printTree(getRoot());
 
 /* 查找结点 */
-let node = search(5);
+let node = search(7);
 console.log('\n查找到的结点对象为 ' + node + '，结点值 = ' + node!.val);
 
 /* 插入结点 */