diff --git a/codes/cpp/chapter_heap/my_heap.cpp b/codes/cpp/chapter_heap/my_heap.cpp
index 56a8756a3..56ac3f47c 100644
--- a/codes/cpp/chapter_heap/my_heap.cpp
+++ b/codes/cpp/chapter_heap/my_heap.cpp
@@ -120,6 +120,7 @@ public:
         cout << "堆的树状表示：" << endl;
         TreeNode *root = vecToTree(maxHeap);
         PrintUtil::printTree(root);
+        freeMemoryTree(root);
     }
 };
 
diff --git a/codes/cpp/include/PrintUtil.hpp b/codes/cpp/include/PrintUtil.hpp
index 053b9c030..e54926251 100644
--- a/codes/cpp/include/PrintUtil.hpp
+++ b/codes/cpp/include/PrintUtil.hpp
@@ -331,5 +331,6 @@ class PrintUtil {
             cout << "堆的树状表示：" << endl;
             TreeNode *root = vecToTree(vec);
             printTree(root);
+            freeMemoryTree(root);
         }
 };