diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
index 41fb72485..8ff4ac44d 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.c
@@ -143,10 +143,10 @@ void usb_free_mem_data_page(usb_mem_page_t page){
 }
 
 
-int usb_used_page_num_mem_pool(){
+int usb_used_page_num_mem_pool(usb_mem_pool_t mem_pool){
     int header, tail, used_num;
-    header = usb_mem_data_pool.header;
-    tail = usb_mem_data_pool.tail;
+    header = mem_pool->header;
+    tail = mem_pool->tail;
 
     used_num = tail - header;
 
@@ -162,7 +162,7 @@ uintptr_t usb_mem_data_page_phy2vir(uintptr_t phy_addr){
     uintptr_t vir_addr = 0;
 
     header = usb_mem_data_pool.header;
-    used_num = usb_used_page_num_mem_pool();
+    used_num = usb_used_page_num_mem_pool(&usb_mem_data_pool);
 
     cnt = 0;
     while(cnt < used_num){
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
index 312cf2dcc..238b8f1ec 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/mem/usb_mem.h
@@ -60,7 +60,7 @@ int usb_mem_data_pool_init();
 void usb_mem_data_pool_destory();
 int usb_alloc_mem_data_page(usb_mem_page_t page);
 void usb_free_mem_data_page(usb_mem_page_t page);
-int usb_used_page_num_mem_pool();
+int usb_used_page_num_mem_pool(usb_mem_pool_t mem_pool);
 uintptr_t usb_mem_data_page_phy2vir(uintptr_t phy_addr);