diff --git a/balloon/balloon.h b/balloon/balloon.h
deleted file mode 100644
index 99a86d6..0000000
--- a/balloon/balloon.h
+++ /dev/null
@@ -1,57 +0,0 @@
-#ifndef __BALLOON_H__
-#define __BALLOON_H__
-
-/*
-	Balloon language made by ValKmjolnir
-	place: NUAA QQ: 896693328 e-mail: 896693328@qq.com
-	Balloon is a real subset of Nasal language
-	Nasal language is created for FlightGear
-	Nasal language seems like ECMAscript
-	So you may find some similarities between nas & js
-*/
-
-
-#include <iostream>
-#include <cstdlib>
-#include <cstring>
-#include <fstream>
-#include <cmath>
-#include <list>
-#include <stack>
-#include <ctime>
-
-#include <unistd.h>
-
-void alert_sound()
-{
-	printf("\a");
-	return;
-}
-
-#include "balloon_type.h"                 // place some enums
-#include "abstract_syntax_tree.h"         // ast
-#include "balloon_var.h"                  // var
-/* global varia in balloon_var.h :
-	var error_var;                        // give an error_var to get 
-*/
-#include "balloon_lexer.h"                // lexer
-/* global varia in balloon_lexer.h :
-	struct token;                         // used to get token from resource codes
-	std::string reserve_word[15];         // place many reserve words
-	int is_reserve_word(std::string str); // check the string is a reserve word or not and return the number of reserve word
-	bool check_number(std::string str);   // check the string can be processed to number or not
-*/
-#include "balloon_parse.h"                // parser
-#include "balloon_scope.h"                // place to store vars
-/* global varia in balloon_scope.h :
-	balloon_scope scope;                  // make a place to vars
-*/
-#include "abstract_syntax_tree.cpp"       // runtime
-/* global varia in abstract_syntax_tree.cpp :
-	int exit_type;                        // record the state of runtime
-	std::stack<var> ret_stack;            // for function ret use
-	int recursion_depth;                  // avoid too deep recursion
-	std::string str_for_input             // global value str to avoid stack overflow
-	var* append_addr                      // used in append function , to get a correct addr of all kinds of arrays
-*/
-#endif