diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/Makefile b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/Makefile
index 06e625952..053ed09c8 100644
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/Makefile
+++ b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/Makefile
@@ -66,4 +66,8 @@ ifeq ($(CONFIG_XIDATONG_SDRAM),y)
 CSRCS += imxrt_sdram_ini_dcd.c
 endif
 
+ifeq ($(CONFIG_USBHOST),y)
+CSRCS += imxrt_usbhost.c
+endif
+
 include $(TOPDIR)/boards/Board.mk
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_bringup.c b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_bringup.c
index eda38f3b0..d6879f0cc 100644
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_bringup.c
+++ b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_bringup.c
@@ -47,6 +47,10 @@
 #  include "imxrt_usdhc.h"
 #endif
 
+#ifdef CONFIG_USBMONITOR
+#  include <nuttx/usb/usbmonitor.h>
+#endif
+
 #include "xidatong.h"
 
 #include <arch/board/board.h>  /* Must always be included last */
@@ -175,6 +179,25 @@ int imxrt_bringup(void)
     }
 #endif
 
+#if defined(CONFIG_IMXRT_USBOTG) || defined(CONFIG_USBHOST)
+  ret = imxrt_usbhost_initialize();
+  if (ret != OK)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to start USB host services: %d\n", ret);
+      return ret;
+    }
+#endif
+
+#ifdef CONFIG_USBMONITOR
+  /* Start the USB Monitor */
+
+  ret = usbmonitor_start();
+  if (ret != OK)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to start USB monitor: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_DEV_GPIO
   ret = imxrt_gpio_initialize();
   if (ret < 0)
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_usbhost.c b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_usbhost.c
new file mode 100644
index 000000000..335a3f687
--- /dev/null
+++ b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_usbhost.c
@@ -0,0 +1,299 @@
+/****************************************************************************
+ * boards/arm/imxrt/imxrt1020-evk/src/imxrt_usbhost.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <sched.h>
+#include <errno.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/irq.h>
+#include <nuttx/kthread.h>
+#include <nuttx/usb/usbdev.h>
+#include <nuttx/usb/usbhost.h>
+#include <nuttx/usb/usbdev_trace.h>
+#include <nuttx/usb/ehci.h>
+
+#include <imxrt_ehci.h>
+
+#include "hardware/imxrt_pinmux.h"
+#include "hardware/imxrt_usbotg.h"
+#include "imxrt_periphclks.h"
+#include "xidatong.h"
+
+#include <arch/board/board.h>  /* Must always be included last */
+
+#if defined(CONFIG_IMXRT_USBOTG) || defined(CONFIG_USBHOST)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef CONFIG_USBHOST_DEFPRIO
+#  define CONFIG_USBHOST_DEFPRIO 50
+#endif
+
+#ifndef CONFIG_USBHOST_STACKSIZE
+#  ifdef CONFIG_USBHOST_HUB
+#    define CONFIG_USBHOST_STACKSIZE 1536
+#  else
+#    define CONFIG_USBHOST_STACKSIZE 1024
+#  endif
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* Retained device driver handle */
+
+static struct usbhost_connection_s *g_ehciconn;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: ehci_waiter
+ *
+ * Description:
+ *   Wait for USB devices to be connected to the EHCI root hub.
+ *
+ ****************************************************************************/
+
+static int ehci_waiter(int argc, char *argv[])
+{
+  FAR struct usbhost_hubport_s *hport;
+
+  uinfo("ehci_waiter:  Running\n");
+  for (; ; )
+    {
+      /* Wait for the device to change state */
+
+      DEBUGVERIFY(CONN_WAIT(g_ehciconn, &hport));
+      syslog(LOG_INFO, "ehci_waiter: %s\n",
+             hport->connected ? "connected" : "disconnected");
+
+      /* Did we just become connected? */
+
+      if (hport->connected)
+        {
+          /* Yes.. enumerate the newly connected device */
+
+          CONN_ENUMERATE(g_ehciconn, hport);
+        }
+    }
+
+  /* Keep the compiler from complaining */
+
+  return 0;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: imxrt_usbhost_initialize
+ *
+ * Description:
+ *   Called at application startup time to initialize the USB host
+ *   functionality.
+ *   This function will start a thread that will monitor for device
+ *   connection/disconnection events.
+ *
+ ****************************************************************************/
+
+int imxrt_usbhost_initialize(void)
+{
+  pid_t pid;
+  int ret;
+
+  imxrt_clockall_usboh3();
+
+  /* Make sure we don't accidentally switch on USB bus power */
+
+  *((uint32_t *)IMXRT_USBNC_USB_OTG1_CTRL) = USBNC_PWR_POL;
+  *((uint32_t *)0x400d9030)                = (1 << 21);
+  *((uint32_t *)0x400d9000)                = 0;
+
+  /* Setup pins, with power initially off */
+
+  imxrt_config_gpio(GPIO_USBOTG_ID);
+
+  /* First, register all of the class drivers needed to support the drivers
+   * that we care about
+   */
+
+#ifdef CONFIG_USBHOST_HUB
+  /* Initialize USB hub support */
+
+  ret = usbhost_hub_initialize();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: usbhost_hub_initialize failed: %d\n", ret);
+    }
+#endif
+
+#ifdef CONFIG_USBHOST_MSC
+  /* Register the USB host Mass Storage Class */
+
+  ret = usbhost_msc_initialize();
+  if (ret != OK)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to register the mass storage class: %d\n", ret);
+    }
+#endif
+
+#ifdef CONFIG_USBHOST_CDCACM
+  /* Register the CDC/ACM serial class */
+
+  ret = usbhost_cdcacm_initialize();
+  if (ret != OK)
+    {
+      uerr("ERROR: Failed to register the CDC/ACM serial class\n");
+    }
+#endif
+
+#ifdef CONFIG_USBHOST_HIDKBD
+  /* Register the USB host HID keyboard class driver */
+
+  ret = usbhost_kbdinit();
+  if (ret != OK)
+    {
+      uerr("ERROR: Failed to register the KBD class\n");
+    }
+#endif
+
+  /* Then get an instance of the USB EHCI interface. */
+
+  g_ehciconn = imxrt_ehci_initialize(0);
+
+  if (!g_ehciconn)
+    {
+      uerr("ERROR: imxrt_ehci_initialize failed\n");
+      return -ENODEV;
+    }
+
+  /* Start a thread to handle device connection. */
+
+  pid = kthread_create("EHCI Monitor", CONFIG_USBHOST_DEFPRIO,
+                       CONFIG_USBHOST_STACKSIZE,
+                       (main_t)ehci_waiter, (FAR char * const *)NULL);
+  if (pid < 0)
+    {
+      uerr("ERROR: Failed to create ehci_waiter task: %d\n", ret);
+      return -ENODEV;
+    }
+
+  return OK;
+}
+
+/****************************************************************************
+ * Name: imxrt_usbhost_vbusdrive
+ *
+ * Description:
+ *   Enable/disable driving of VBUS 5V output.  This function must be
+ *   provided by each platform that implements the OHCI or EHCI host
+ *   interface
+ *
+ * Input Parameters:
+ *   rhport - Selects root hub port to be powered host interface.
+ *            Since the IMXRT has only a downstream port, zero is
+ *            the only possible value for this parameter.
+ *   enable - true: enable VBUS power; false: disable VBUS power
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+#define HCOR ((volatile struct ehci_hcor_s *)IMXRT_USBOTG_HCOR_BASE)
+
+void imxrt_usbhost_vbusdrive(int rhport, bool enable)
+{
+  uint32_t regval;
+
+  uinfo("RHPort%d: enable=%d\n", rhport + 1, enable);
+
+  /* The IMXRT has only a single root hub port */
+
+  if (rhport == 0)
+    {
+      /* Then enable or disable VBUS power */
+
+      regval = HCOR->portsc[rhport];
+      regval &= ~EHCI_PORTSC_PP;
+      if (enable)
+        {
+          regval |= EHCI_PORTSC_PP;
+        }
+
+      HCOR->portsc[rhport] = regval;
+    }
+}
+
+/****************************************************************************
+ * Name: imxrt_setup_overcurrent
+ *
+ * Description:
+ *   Setup to receive an interrupt-level callback if an overcurrent condition
+ *   is detected.
+ *
+ * Input Parameters:
+ *   handler - New overcurrent interrupt handler
+ *   arg     - The argument that will accompany the interrupt
+ *
+ * Returned Value:
+ *   Zero (OK) returned on success; a negated errno value is returned on
+ *   failure.
+ *
+ ****************************************************************************/
+
+#if 0 /* Not ready yet */
+int imxrt_setup_overcurrent(xcpt_t handler, void *arg)
+{
+  irqstate_t flags;
+
+  /* Disable interrupts until we are done.  This guarantees that the
+   * following operations are atomic.
+   */
+
+  flags = enter_critical_section();
+
+  /* Configure the interrupt */
+
+#warning Missing logic
+
+  leave_critical_section(flags);
+  return OK;
+}
+#endif /* 0 */
+
+#endif /* CONFIG_IMXRT_USBOTG || CONFIG_USBHOST */
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/xidatong.h b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/xidatong.h
index d8828d756..050d3dc5b 100644
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/xidatong.h
+++ b/Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/xidatong.h
@@ -119,6 +119,10 @@
 #define GPIO_MMCSD_EN   (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | \
                          GPIO_PORT3 | GPIO_PIN2 | IOMUX_MMCSD_EN)
 
+/* USB OTG ID Pin： GPIO_AD_B1_01 */
+
+#define GPIO_USBOTG_ID  (GPIO_USB_OTG1_ID_2 | IOMUX_USBOTG_ID_DEFAULT)      /* GPIO_AD_B1_01 */
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/
@@ -198,5 +202,9 @@ void imxrt_autoled_initialize(void);
 int imxrt_gpio_initialize(void);
 #endif
 
+#if defined(CONFIG_IMXRT_USBOTG) || defined(CONFIG_USBHOST)
+int imxrt_usbhost_initialize(void);
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif /* __BOARDS_ARM_IMXRT_XIDATONG_SRC_XIDATONG_H */
diff --git a/Ubiquitous/Nuttx_Fusion_XiUOS/app_match_nuttx/build.sh b/Ubiquitous/Nuttx_Fusion_XiUOS/app_match_nuttx/build.sh
index c8bb5ca86..89b0edaf3 100644
--- a/Ubiquitous/Nuttx_Fusion_XiUOS/app_match_nuttx/build.sh
+++ b/Ubiquitous/Nuttx_Fusion_XiUOS/app_match_nuttx/build.sh
@@ -11,7 +11,6 @@ git submodule update Ubiquitous/Nuttx_Fusion_XiUOS/apps
 git submodule update Ubiquitous/Nuttx_Fusion_XiUOS/nuttx
 cd $current
 
-chmod -R +x $top
 find $top -name Kconfig -exec dos2unix -q {} \;
 
 cp -rf $current/nuttx $nuttx