diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c
index ab3ae16f0..f261b6ee5 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c
@@ -335,7 +335,7 @@ void usb_osal_leave_critical_section(size_t flag){
 
 void usb_osal_msleep(uint32_t delay){
     if(delay > 0){
-        
+        sleep(delay);
     }
 }