diff --git a/query_data.c b/query_data.c
deleted file mode 100644
index 1aa8a32..0000000
--- a/query_data.c
+++ /dev/null
@@ -1,23 +0,0 @@
-// 查询图书信息
-void query_data()
-{
-    int id;
-    struct book *p;
-    
-    printf("请输入要查询的图书编号:");
-    scanf("%d", &id);
-    
-    p = find(id);     // 查找编号为id的图书
-    if(p != NULL)
-    {
-        printf("图书信息如下:\n");
-        printf("图书编号:%d\n", p->id);
-        printf("图书名称:%s\n", p->name);
-        printf("图书作者:%s\n", p->author); 
-        printf("图书价格:%.2f\n", p->price);
-    }
-    else
-    {
-        printf("没有找到编号为%d的图书!\n", id);
-    }
-}