diff --git a/datastruct/datastruct.vcxproj b/datastruct/datastruct.vcxproj
index def2186..de9ae8a 100644
--- a/datastruct/datastruct.vcxproj
+++ b/datastruct/datastruct.vcxproj
@@ -143,6 +143,8 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="deque.c" />
+    <ClCompile Include="deque_test.c" />
     <ClCompile Include="list.c" />
     <ClCompile Include="list_test.c" />
     <ClCompile Include="main.c" />
@@ -159,6 +161,7 @@
     <ClInclude Include="common.h" />
     <ClInclude Include="config.h" />
     <ClInclude Include="demo.h" />
+    <ClInclude Include="deque.h" />
     <ClInclude Include="list.h" />
     <ClInclude Include="queue.h" />
     <ClInclude Include="rbtree.h" />
diff --git a/datastruct/datastruct.vcxproj.filters b/datastruct/datastruct.vcxproj.filters
index 0d59ba4..4b77ada 100644
--- a/datastruct/datastruct.vcxproj.filters
+++ b/datastruct/datastruct.vcxproj.filters
@@ -54,6 +54,12 @@
     <ClCompile Include="list_test.c">
       <Filter>测试</Filter>
     </ClCompile>
+    <ClCompile Include="deque.c">
+      <Filter>源文件</Filter>
+    </ClCompile>
+    <ClCompile Include="deque_test.c">
+      <Filter>测试</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="list.h">
@@ -83,5 +89,8 @@
     <ClInclude Include="config.h">
       <Filter>头文件</Filter>
     </ClInclude>
+    <ClInclude Include="deque.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/datastruct/deque.c b/datastruct/deque.c
new file mode 100644
index 0000000..8d39b3d
--- /dev/null
+++ b/datastruct/deque.c
@@ -0,0 +1,113 @@
+
+#include "deque.h"
+
+bool deque_push_back(struct _list* self, void* obj)
+{
+
+}
+bool deque_push_front(struct _list* self, void* obj)
+{
+
+}
+bool deque_pop_back(struct _list* self, void* obj)
+{
+
+}
+bool deque_pop_front(struct _list* self, void* obj)
+{
+
+}
+bool deque_back(struct _list* self, void* obj)
+{
+
+}
+bool deque_front(struct _list* self, void* obj)
+{
+
+}
+
+bool deque_insert(struct _list* self, int index, void* obj)
+{
+
+}
+bool deque_erase(struct _list* self, int index, void* obj)
+{
+
+}
+
+int deque_index(struct _list* self, void* obj)
+{
+
+}
+bool deque_remove(struct _list* self, void* obj)
+{
+
+}
+
+bool deque_clear(struct _list* self)
+{
+
+}
+
+bool deque_get(struct _list* self, int index, void* obj)
+{
+
+}
+bool deque_set(struct _list* self, int index, void* obj) 
+{
+
+}
+
+uint32_t deque_size(struct _list* self)
+{
+
+}
+bool deque_empty(struct _list* self)
+{
+
+}
+void deque_destory(struct _list* self)
+{
+
+}
+
+void deque_print(struct _list* self)
+{
+
+}
+
+bool deque_init(struct _deque* deque, uint32_t obj_size)
+{
+    // attribute
+    deque->_obj_size = obj_size;
+    deque->_size = 0;
+    // deque->_capacity = 64;
+    // deque->_ratio = 2;
+
+    // function
+    deque->back = deque_back;
+    deque->clear = deque_clear;
+    deque->destory = deque_destory;
+    deque->empty = deque_empty;
+    deque->erase = deque_erase;
+    deque->front = deque_front;
+    deque->get = deque_get;
+    deque->index = deque_index;
+    deque->insert = deque_insert;
+    deque->pop_back = deque_pop_back;
+    deque->pop_front = deque_pop_back;
+    deque->remove = deque_remove;
+    deque->set = deque_set;
+    deque->size = deque_size;
+
+
+    deque->_head = (struct _deque_node*)malloc(sizeof(struct _deque_node));
+    if (deque->_head == NULL)
+    {
+        return false;
+    }
+    deque->_head->prev = deque->_head;
+    deque->_head->next = deque->_head;
+    
+    return true;
+}
diff --git a/datastruct/deque.h b/datastruct/deque.h
new file mode 100644
index 0000000..a109805
--- /dev/null
+++ b/datastruct/deque.h
@@ -0,0 +1,56 @@
+
+#ifndef _DEQUE_H_
+#define _DEQUE_H_
+
+#include "common.h"
+
+struct _deque_node
+{
+    void* obj;
+    struct _deque_node* prev;
+    struct _deque_node* next;
+};
+
+struct _deque
+{
+    struct _deque_node* _head;
+
+    uint32_t _obj_size;			// Ԫ�ش�С
+    uint32_t _size;				// ջ��С
+    uint32_t _capacity;			// ������
+    uint32_t _ratio;			// ��չ����
+
+    // kernel
+    bool (*push_back)(struct _list* self, void* obj);
+    bool (*push_front)(struct _list* self, void* obj);
+    bool (*pop_back)(struct _list* self, void* obj);
+    bool (*pop_front)(struct _list* self, void* obj);
+    bool (*back)(struct _list* self, void* obj);
+    bool (*front)(struct _list* self, void* obj);
+
+    bool (*insert)(struct _list* self, int index, void* obj);
+    bool (*erase)(struct _list* self, int index, void* obj);
+
+    int (*index)(struct _list* self, void* obj);
+    bool (*remove)(struct _list* self, void* obj);
+
+    bool (*clear)(struct _list* self);
+
+    bool (*get)(struct _list* self, int index, void* obj);
+    bool (*set)(struct _list* self, int index, void* obj);
+
+    // size
+    uint32_t(*size)(struct _list* self);
+    bool (*empty)(struct _list* self);
+
+    // free
+    void (*destory)(struct _list* self);
+
+    // print
+    void (*print)(struct _list* self);
+    void (*print_obj)(void* obj);
+};
+
+bool deque_init(struct _deque* deque, uint32_t obj_size);
+
+#endif
diff --git a/datastruct/deque_test.c b/datastruct/deque_test.c
new file mode 100644
index 0000000..794a844
--- /dev/null
+++ b/datastruct/deque_test.c
@@ -0,0 +1,7 @@
+
+#include "deque.h"
+
+void deque_test(void)
+{
+
+}