diff --git a/class/shu_zi_jv_xin.cpp b/class/shu_zi_jv_xin.cpp
index 6906ad8..ca78f62 100644
--- a/class/shu_zi_jv_xin.cpp
+++ b/class/shu_zi_jv_xin.cpp
@@ -1,5 +1,5 @@
 //数字矩形
-#include<bits/stdc++.h>
+#include<iostream>
 
 using namespace std;