diff --git a/Store.h b/Store.h
new file mode 100644
index 0000000..e0f4903
--- /dev/null
+++ b/Store.h
@@ -0,0 +1,32 @@
+#ifndef STORE_H
+#define STORE_H
+#include "polynomial.h"
+//#include "polynomial_store.h"
+struct Store_item {
+	int type;           //多项式类型：0稠密多项式，1乘积多项式
+	int mul_poly;       //乘积多项式中多项式部分的首项编号
+	int mul_mono;       //乘积多项式中单项式部分的首项编号
+	int reductor;       //消元子
+	int id;				//多项式编号
+	Polynomial* poly;   //指向稠密多项式的指针
+};
+struct Store {
+	Store_item data[M];
+	Store();
+	void Store_Polynomial(Polynomial* p, int id);
+	Store_item& operator [](int i);
+	void clear();
+};
+struct MPTS {     //multiple polynomial temp store
+	pair<int, int> data[MAX_ROWS];
+	int polys;
+	MPTS();
+	void append(int mul_poly, int mul_mono);
+	void insert(int mul_poly, int mul_mono, int index);
+	void remove_null(int max_polys = MAX_ROWS);
+
+	pair<int, int>& operator [](int i);
+	void clear();
+};
+extern Store system_store;
+#endif
\ No newline at end of file