diff --git a/data.h b/data.h
index 9ae1c5b..f05e2a5 100644
--- a/data.h
+++ b/data.h
@@ -82,11 +82,8 @@ bool bookempty()
 }
 
 // 添加图书
-template <int MAXSIZE = 256>
 void DoAddBook()
 {
-    if (books.length == MAXSIZE) {
-        cout << "books full" << endl;exit(DoAddBook);}
     cout << endl << "Add Book"<< endl<<endl;
     Book book;
     input(book); //输入图书