diff --git a/query_data.c b/query_data.c
new file mode 100644
index 0000000..1aa8a32
--- /dev/null
+++ b/query_data.c
@@ -0,0 +1,23 @@
+// 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);
+    }
+}