diff --git a/components/drivers/usb/usbdevice/core/core.c b/components/drivers/usb/usbdevice/core/core.c
index c8cd362bef3b1aa401bbaf7d93ae0ef511bea089..297e1ab48dccd433db7034880f0172ec6be36c18 100644
--- a/components/drivers/usb/usbdevice/core/core.c
+++ b/components/drivers/usb/usbdevice/core/core.c
@@ -955,6 +955,7 @@ static rt_size_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_s
     RT_ASSERT(device->dcd != RT_NULL);
     RT_ASSERT(ep != RT_NULL);    
 
+    rt_enter_critical();
     maxpacket = EP_MAXPACKET(ep);
     if(ep->request.remain_size >= maxpacket)
     {
@@ -968,7 +969,7 @@ static rt_size_t rt_usbd_ep_write(udevice_t device, uep_t ep, void *buffer, rt_s
             ep->request.remain_size);
         ep->request.remain_size = 0;
     }
-
+    rt_exit_critical();
     return size;
 }