diff --git a/Ubiquitous/XiUOS/board/aiit-riscv64-board/Kconfig b/Ubiquitous/XiUOS/board/aiit-riscv64-board/Kconfig
index 65db341b6..dce13fa31 100644
--- a/Ubiquitous/XiUOS/board/aiit-riscv64-board/Kconfig
+++ b/Ubiquitous/XiUOS/board/aiit-riscv64-board/Kconfig
@@ -58,6 +58,10 @@ menu "aiit-riscv64-board feature"
                 bool "mount cd card"
                 default n
                 select  BSP_USING_SDIO
+            config MOUNT_USB
+                bool "mount usb"
+                default n
+                select  BSP_USING_USB
         endmenu
 
     endmenu
diff --git a/Ubiquitous/XiUOS/board/aiit-riscv64-board/board.c b/Ubiquitous/XiUOS/board/aiit-riscv64-board/board.c
index 17f15197c..18bab5060 100644
--- a/Ubiquitous/XiUOS/board/aiit-riscv64-board/board.c
+++ b/Ubiquitous/XiUOS/board/aiit-riscv64-board/board.c
@@ -64,13 +64,24 @@ extern int HwRtcInit(void);
 extern int HwTouchBusInit(void);
 extern int HwCh376Init(void);
 
-#if defined(FS_VFS) && defined(MOUNT_SDCARD)
+#ifdef FS_CH376
 #include <iot-vfs.h>
-
+#ifdef MOUNT_USB
 /**
- * @description: Mount SD card
+ * @description: Mount USB
  * @return 0
  */
+int  MountUSB(void)
+{
+    if (MountFilesystem(USB_BUS_NAME, USB_DEVICE_NAME, USB_DRIVER_NAME, FSTYPE_CH376, "/") == 0)
+        KPrintf("usb mount to '/'");
+    else
+        KPrintf("usb mount to '/' failed!");
+    
+    return 0;
+}
+#endif
+#ifdef MOUNT_SDCARD
 /**
  * @description: Mount SD card
  * @return 0
@@ -85,6 +96,7 @@ int  MountSDCard(void)
     return 0;
 }
 #endif
+#endif
 
 void init_bss(void)
 {
@@ -185,6 +197,9 @@ struct InitSequenceDesc _board_init[] =
 #ifdef BSP_USING_SDIO
     { "hw_sdio", HwCh376Init},
 #endif
+#ifdef BSP_USING_USB
+    { "hw_usb", HwCh376Init},
+#endif
 #ifdef BSP_USING_TOUCH
     { "hw_touch", HwTouchBusInit},
 #endif
diff --git a/Ubiquitous/XiUOS/kernel/include/xs_init.h b/Ubiquitous/XiUOS/kernel/include/xs_init.h
index eb3af1e11..745377e91 100644
--- a/Ubiquitous/XiUOS/kernel/include/xs_init.h
+++ b/Ubiquitous/XiUOS/kernel/include/xs_init.h
@@ -43,6 +43,7 @@ extern int Ch376fsInit(void);
 extern int LibcSystemInit(void);
 extern int RtcNtpSyncInit(void);
 extern int MountSDCard(void);
+extern int MountUSB(void);
 extern int DfsMountTable(void);
 extern int userShellInit(void);
 extern int STM32USBHostRegister(void);
diff --git a/Ubiquitous/XiUOS/kernel/thread/init.c b/Ubiquitous/XiUOS/kernel/thread/init.c
index af363f757..94a3d1881 100644
--- a/Ubiquitous/XiUOS/kernel/thread/init.c
+++ b/Ubiquitous/XiUOS/kernel/thread/init.c
@@ -109,6 +109,10 @@ struct InitSequenceDesc env_init[] =
 	{ "MountSDCard", MountSDCard },
 #endif
 
+#ifdef MOUNT_USB
+	{ "MountUSB", MountUSB },
+#endif
+
 #ifdef FS_VFS_MNTTABLE
 	{ "DfsMountTable", DfsMountTable },
 #endif
diff --git a/Ubiquitous/XiUOS/resources/include/usb_host.h b/Ubiquitous/XiUOS/resources/include/usb_host.h
index 131b8370a..473b647fb 100644
--- a/Ubiquitous/XiUOS/resources/include/usb_host.h
+++ b/Ubiquitous/XiUOS/resources/include/usb_host.h
@@ -40,6 +40,12 @@ Modification:
 extern "C" {
 #endif
 
+#ifdef ARCH_CPU_64BIT
+typedef uint64 x_usb_format;
+#else
+typedef uint32 x_usb_format;
+#endif
+
 #define USB_MAX_DEVICE                       0x20
 #define USB_MAX_INTERFACE               0x08
 #define USB_HUB_PORT_NUM             0x04
diff --git a/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/core.c b/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/core.c
index 783a57e6f..26c594327 100644
--- a/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/core.c
+++ b/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/core.c
@@ -491,14 +491,14 @@ x_err_t UsbhClearFeature(UinstPointer device, int endpoint, int feature)
 x_err_t UsbhGetInterfaceDescriptor(UcfgDescPointer CfgDesc, int num, 
     UintfDescPointer* IntfDesc)
 {
-    uint32 ptr, depth = 0;
+    x_usb_format ptr, depth = 0;
     UdescPointer desc;
 
  
     NULL_PARAM_CHECK(CfgDesc);
 
-    ptr = (uint32)CfgDesc + CfgDesc->bLength;
-    while(ptr < (uint32)CfgDesc + CfgDesc->wTotalLength)
+    ptr = (x_usb_format)CfgDesc + CfgDesc->bLength;
+    while(ptr < (x_usb_format)CfgDesc + CfgDesc->wTotalLength)
     {
         if(depth++ > 0x20) 
         {
@@ -517,7 +517,7 @@ x_err_t UsbhGetInterfaceDescriptor(UcfgDescPointer CfgDesc, int num,
                 return EOK;
             }
         }    
-        ptr = (uint32)desc + desc->bLength;
+        ptr = (x_usb_format)desc + desc->bLength;
     }
 
     KPrintf("usb_get_interface_descriptor %d failed\n", num);
@@ -538,7 +538,7 @@ x_err_t UsbhGetEndpointDescriptor(UintfDescPointer IntfDesc, int num,
     UepDescPointer* EpDesc)
 {
     int count = 0, depth = 0;
-    uint32 ptr;    
+    x_usb_format ptr;    
     UdescPointer desc;
 
    
@@ -546,7 +546,7 @@ x_err_t UsbhGetEndpointDescriptor(UintfDescPointer IntfDesc, int num,
     CHECK(num < IntfDesc->bNumEndpoints);
     *EpDesc = NONE;
 
-    ptr = (uint32)IntfDesc + IntfDesc->bLength;
+    ptr = (x_usb_format)IntfDesc + IntfDesc->bLength;
     while(count < IntfDesc->bNumEndpoints)
     {
         if(depth++ > 0x20) 
@@ -567,7 +567,7 @@ x_err_t UsbhGetEndpointDescriptor(UintfDescPointer IntfDesc, int num,
             }
             else count++;
         }
-        ptr = (uint32)desc + desc->bLength;
+        ptr = (x_usb_format)desc + desc->bLength;
     }
 
     KPrintf("usb_get_endpoint_descriptor %d failed\n", num);
diff --git a/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/hub.c b/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/hub.c
index e2b75cc45..52d2c8121 100644
--- a/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/hub.c
+++ b/Ubiquitous/XiUOS/resources/usb/third_party_usb/usbhost/core/hub.c
@@ -43,13 +43,13 @@ static x_err_t RootHubCtrl(struct uhcd *hcd, uint16 port, uint8 cmd, void *args)
     switch(cmd)
     {
     case RH_GET_PORT_STATUS:
-        (*(uint32 *)args) = hcd->roothub->PortStatus[port-1];
+        (*(x_usb_format *)args) = hcd->roothub->PortStatus[port-1];
         break;
     case RH_SET_PORT_STATUS:
-        hcd->roothub->PortStatus[port-1] = (*(uint32 *)args);
+        hcd->roothub->PortStatus[port-1] = (*(x_usb_format *)args);
         break;
     case RH_CLEAR_PORT_FEATURE:
-        switch(((uint32)args))
+        switch(((x_usb_format)args))
         {
         case PORT_FEAT_C_CONNECTION:
             hcd->roothub->PortStatus[port-1] &= ~PORT_CCSC;
@@ -69,7 +69,7 @@ static x_err_t RootHubCtrl(struct uhcd *hcd, uint16 port, uint8 cmd, void *args)
         }
         break;
     case RH_SET_PORT_FEATURE:
-        switch((uint32)args)
+        switch((x_usb_format)args)
         {
         case PORT_FEAT_CONNECTION:
             hcd->roothub->PortStatus[port-1] |= PORT_CCSC;
@@ -222,7 +222,7 @@ x_err_t UsbhHubClearPortFeature(UhubPointer hub, uint16 port, uint16 feature)
     if(hub->IsRoothub)
     {
         RootHubCtrl(hub->hcd, port, RH_CLEAR_PORT_FEATURE, 
-            (void*)(uint32)feature);
+            (void*)(x_usb_format)feature);
         return EOK;
     }
 
@@ -254,7 +254,7 @@ x_err_t UsbhHubSetPortFeature(UhubPointer hub, uint16 port,
     if(hub->IsRoothub)
     {
         RootHubCtrl(hub->hcd, port, RH_SET_PORT_FEATURE, 
-            (void*)(uint32)feature);
+            (void*)(x_usb_format)feature);
         return EOK;
     }