diff --git a/.vscode/settings.json b/.vscode/settings.json
index e86826e..531237c 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -8,6 +8,8 @@
         "queue.h": "c",
         "stdbool.h": "c",
         "stdint.h": "c",
-        "stack.h": "c"
+        "stack.h": "c",
+        "list.h": "c",
+        "stdio.h": "c"
     }
 }
\ No newline at end of file
diff --git a/README.md b/README.md
index 801489b..d197205 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 | stack_init  | 链表 | |
 | stack2_init | 动态数组 | |
 | **list**   | | **列表**
-| list_init  | 动态数组 | |
+| list_init2  | 动态数组 | |
 | **queue**   | | **队列**
 | queue_init  | 单向链表 | |
 | queue2_init | 数组 | FIFO/空/满 |
diff --git a/include/list.h b/include/list.h
index 6f6dabd..6155780 100644
--- a/include/list.h
+++ b/include/list.h
@@ -47,7 +47,11 @@ struct _list
 	void (*print)(struct _list* self);
 	void (*print_obj)(void* obj);
 };
+typedef struct _list* list_t;
 
-bool list_init(struct _list* list, uint32_t obj_size);
+bool list_init2(struct _list* self, uint32_t obj_size, uint32_t capacity);
+
+list_t list_new(void);
+void list_free(list_t list);
 
 #endif // _LIST_H_
diff --git a/include/stack.h b/include/stack.h
index e9b3dc2..3be1361 100644
--- a/include/stack.h
+++ b/include/stack.h
@@ -12,26 +12,28 @@ struct _stack_node
 struct _stack
 {
 	struct _stack_node * _head;
+	
 	uint32_t _size;				// 栈大小
 	uint32_t _obj_size;			// 元素大小
-	// only for array mode
 	uint32_t _capacity;			// 总容量
 	uint32_t _ratio;			// 扩展比率
 
 	// kernel
-	bool (*peek)(struct _stack* s, void* obj);
-	bool (*push)(struct _stack* s, void* obj);
-	bool (*pop)(struct _stack* s, void* obj);
+	bool (*peek)(struct _stack* self, void* obj);
+	bool (*push)(struct _stack* self, void* obj);
+	bool (*pop)(struct _stack* self, void* obj);
 
 	// base
-	uint32_t(*size)(struct _stack* s);
-	bool (*empty)(struct _stack* s);
+	uint32_t(*size)(struct _stack* self);
+	bool (*empty)(struct _stack* self);
 
 	// others
-	bool (*clear)(struct _stack* s);
-	void (*destory)(struct _stack* s);
+	bool (*clear)(struct _stack* self);
+	void (*destory)(struct _stack* self);
+
+	// print
+	void (*print)(struct _stack* self);
 	void (*print_obj)(void* obj);
-	void (*print)(struct _stack* s);
 };
 typedef struct _stack* stack_t;
 
diff --git a/include/unicstl.h b/include/unicstl.h
index e608dd7..e85e43c 100644
--- a/include/unicstl.h
+++ b/include/unicstl.h
@@ -9,6 +9,12 @@
 #include <string.h>
 #include <assert.h>
 
+#include "list.h"
+#include "stack.h"
+#include "queue.h"
+#include "deque.h"
+#include "tree.h"
+
 #if RBTREE == 1
 #include "rbtree.h"
 	typedef prbtree_node_t stack_data_t;
diff --git a/src/list.c b/src/list.c
index 7eaa6c6..6e87e77 100644
--- a/src/list.c
+++ b/src/list.c
@@ -170,14 +170,14 @@ void list_print(struct _list* self)
 	}
 }
 
-bool list_init(struct _list* list, uint32_t obj_size)
+bool list_init2(struct _list* list, uint32_t obj_size, uint32_t capacity)
 {
 	assert(list != NULL);
 
 	// 1. set attr
 	list->_obj_size = obj_size;
 	list->_size = 0;
-	list->_capacity = 64;
+	list->_capacity = capacity;
 	list->_ratio = 2;
 
 	// 2. set function
diff --git a/test/test.c b/test/test.c
index dbf6072..03235e9 100644
--- a/test/test.c
+++ b/test/test.c
@@ -27,8 +27,8 @@ int main()
 	printf("----- unicstl test -----\n");
 	// while (1)
 	{	
-		// list_test();
-		stack_test();
+		list_test();
+		// test_stack();
 		// deque_test();
 		// queue_test();
 		
diff --git a/test/test.h b/test/test.h
index 9a05ba2..e2f0a7d 100644
--- a/test/test.h
+++ b/test/test.h
@@ -2,23 +2,9 @@
 #ifndef _TEST_H_
 #define _TEST_H_
 
-#include "common.h"
-
-// It is recommended to keep one at the same time
-#define RBTREE_TEST		0
-#define AVLTREE_TEST	0
-#define RAVLTRE_TEST	0
-#define STACK_TEST		0
-#define QUEUE_TEST		0
-#define LIST_TEST		0
-
-
-#if AVLTREE == 1 || RAVLTREE == 1 || RBTREE == 1
-	#if QUEUE_TEST == 1 || STACK_TEST == 1
-	#error "When use the tree, you can't use the base data type of stack or queue! "
-	#endif
-#endif
+#define _CRT_SECURE_NO_WARNINGS 1		// for vs2022
 
+#include "unicstl.h"
 
 /**
  * @brief test objects
@@ -41,7 +27,7 @@ void print_str(void* obj);
  * 
  */
 void list_test(void);
-void stack_test(void);
+void test_stack(void);
 void deque_test(void);
 
 void queue_test(void);
diff --git a/test/test_deque.c b/test/test_deque.c
index de5ba7e..2985cef 100644
--- a/test/test_deque.c
+++ b/test/test_deque.c
@@ -1,10 +1,5 @@
 
-#include "deque.h"
-
-static void print_num(void* obj)
-{
-	printf("(%2d ) ", *(int*)obj);
-}
+#include "test.h"
 
 static void deque_test_num(void)
 {
@@ -174,18 +169,6 @@ static void deque_test_num(void)
 	dq.destory(&dq);
 }
 
-struct _student
-{
-	char name[16];
-	int id;
-};
-
-static void print_struct(void* obj)
-{
-	struct _student* student = (struct _student*)obj;
-	printf("(%4d:%-8s) ", student->id, student->name);
-}
-
 static void deque_test_struct(void)
 {
 	uint32_t i = 0;
diff --git a/test/test_list.c b/test/test_list.c
index 61103fa..ef7cd4f 100644
--- a/test/test_list.c
+++ b/test/test_list.c
@@ -1,12 +1,7 @@
-#define _CRT_SECURE_NO_WARNINGS 1		// for vs2022
-#include "list.h"
 
-static void print_num(void* obj)
-{
-	printf("(%2d )", *(int*)obj);
-}
+#include "test.h"
 
-static void list_test_num(void)
+static void test_list_num(void)
 {
 	int i = 0;
 	int data[] = { 1,2,3,4,5,6,7,8,9,10 };
@@ -15,7 +10,7 @@ static void list_test_num(void)
 	int len = sizeof(data) / sizeof(data[0]);
 
 	struct _list list;
-	list_init(&list, sizeof(int));
+	list_init2(&list, sizeof(int), 64);
 	list.print_obj = print_num;
 
 	printf("\n\n----- list_test_num -----\n");
@@ -138,20 +133,7 @@ static void list_test_num(void)
 	list.destory(&list);
 }
 
-
-struct _student
-{
-	char name[16];
-	int id;
-};
-
-static void print_struct(void* obj)
-{
-	struct _student* student = (struct _student*)obj;
-	printf("(%4d:%-8s) ", student->id, student->name);
-}
-
-static void list_test_struct(void)
+static void test_list_struct(void)
 {
 	int i = 0;
 	struct _student data[] = {
@@ -164,7 +146,7 @@ static void list_test_struct(void)
 	int len = sizeof(data) / sizeof(data[0]);
 
 	struct _list list;
-	list_init(&list, sizeof(struct _student));
+	list_init2(&list, sizeof(struct _student), 64);
 	list.print_obj = print_struct;
 
 	printf("\n\n----- list_test_num -----\n");
@@ -307,6 +289,6 @@ static void list_test_struct(void)
 
 void list_test(void)
 {
-	list_test_num();
-	list_test_struct();
+	test_list_num();
+	test_list_struct();
 }
diff --git a/test/test_queue.c b/test/test_queue.c
index ec53b44..558a4d6 100644
--- a/test/test_queue.c
+++ b/test/test_queue.c
@@ -1,5 +1,4 @@
 
-#include "queue.h"
 #include "test.h"
 
 #if QUEUE_TEST == 1
diff --git a/test/test_stack.c b/test/test_stack.c
index 99697ff..f3ab7ad 100644
--- a/test/test_stack.c
+++ b/test/test_stack.c
@@ -1,11 +1,7 @@
-#include "stack.h"
 
-static void print_num(void* obj)
-{
-	printf("(%2d ) ", *(int*)obj);
-}
+#include "test.h"
 
-static void stack_test_num(void)
+static void test_stack_num(void)
 {
 	uint32_t i = 0;
 	int data[] = { 1,2,3,4,5,6,7,8,9,10 };
@@ -16,7 +12,7 @@ static void stack_test_num(void)
 	stack_init(&s, sizeof(int));
 	s.print_obj = print_num;
 
-	printf("\n\n----- stack_test_num -----\n");
+	printf("\n\n----- test_stack_num -----\n");
 	// get top if stack is empty
 	s.peek(&s, &temp);
 
@@ -66,12 +62,7 @@ static void stack_test_num(void)
 	s.destory(&s);
 }
 
-static void print_char(void* obj)
-{
-	printf("(%2c ) ", *(char*)obj);
-}
-
-static void stack_test_char(void)
+static void test_stack_char(void)
 {
 	uint32_t i = 0;
 	char data[] = "abcdefghijk";
@@ -82,7 +73,7 @@ static void stack_test_char(void)
 	stack_init2(&s, sizeof(char), 64);
 	s.print_obj = print_char;
 
-	printf("\n\n----- stack_test_char -----\n");
+	printf("\n\n----- test_stack_char -----\n");
 	// get top if stack is empty
 	s.peek(&s, &temp);
 
@@ -131,20 +122,7 @@ static void stack_test_char(void)
 	s.destory(&s);
 }
 
-
-struct _student
-{
-	char name[16];
-	int id;
-};
-
-static void print_struct(void* obj)
-{
-	struct _student* student = (struct _student*)obj;
-	printf("(%2d:%-5s ) ", student->id, student->name);
-}
-
-static void stack_test_struct(void)
+static void test_stack_struct(void)
 {
 	uint32_t i = 0;
 	struct _student data[] = {
@@ -159,7 +137,7 @@ static void stack_test_struct(void)
 	stack_init(stack, sizeof(struct _student));
 	stack->print_obj = print_struct;
 
-	printf("\n\n----- stack_test_struct -----\n");
+	printf("\n\n----- test_stack_struct -----\n");
 	// get top if stack is empty
 	stack->peek(stack, &temp);
 
@@ -221,9 +199,9 @@ static void stack_test_struct(void)
 	stack_free(stack);
 }
 
-void stack_test(void)
+void test_stack(void)
 {
-	stack_test_num();
-	stack_test_char();
-	stack_test_struct();
+	test_stack_num();
+	test_stack_char();
+	test_stack_struct();
 }