diff --git a/list/list.h b/list/list.h
index 9c74c6d..180081a 100644
--- a/list/list.h
+++ b/list/list.h
@@ -41,6 +41,9 @@ unsigned long long getId(void);
 int insertInHead(List *p_list, Node *p_node);
 int insertInTail(List *p_list, Node *p_node);
 
+/*交换函数*/
+int exchangeLocation(Node *p_node,Node *t_node);
+
 /*移除函数*/
 int removeById(List *p_list, unsigned long id);
 int removeByNode(List *p_list, Node *p_node);
@@ -467,4 +470,18 @@ int isListEmpty(List *p_list){
 	return 0;					// want to make a list empty.
 }
 
+int exchangeLocation(Node *p_node,Node *t_node){
+    Node *temp_next = p_node->next;
+    Node *temp_last = p_node->last;
+    p_node->last->next = t_node;
+    p_node->next->last = t_node;
+    t_node->last->next = p_node;
+    t_node->next->last = p_node;
+    p_node->next = t_node->next;
+    p_node->last = t_node->last;
+    t_node->next = temp_next;
+    t_node->last = temp_last;
+    return 0;
+}
+
 #endif