diff --git a/TinySTL/BinarySearchTree.h b/TinySTL/BinarySearchTree.h
index 300f5f3..d7e8ebc 100644
--- a/TinySTL/BinarySearchTree.h
+++ b/TinySTL/BinarySearchTree.h
@@ -144,8 +144,9 @@ namespace TinySTL{
 	void binary_search_tree<T>::insert_elem(const T& val, node *&ptr){//重复的元素不插入
 		if (ptr == 0){
 			ptr = nodeAllocator::allocate();
+			memset(ptr, 0, sizeof(node));
 			ptr->data_ = val;
-			ptr->left_ = ptr->right_ = 0;
+			//ptr->left_ = ptr->right_ = 0;
 			++size_;
 		}
 		else{