diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/device.md b/rt-thread-version/rt-thread-standard/programming-manual/device/device.md
index c79a57767b75142ca5a2ffccedf55403f6df5fc4..20c9cbd126ca2c0f2ee75c9c63848ec8761e6720 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/device.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/device.md
@@ -449,7 +449,7 @@ rt_err_t rt_device_set_tx_complete(rt_device_t dev, rt_err_t (*tx_done)(rt_devic
 #include <rtthread.h>
 #include <rtdevice.h>
 
-#define IWDG_DEVICE_NAME    "iwg"
+#define IWDG_DEVICE_NAME    "wdt"
 
 static rt_device_t wdg_dev;
 
@@ -463,7 +463,7 @@ static void idle_hook(void)
 int main(void)
 {
     rt_err_t res = RT_EOK;
-    rt_uint32_t timeout = 1000;    /* 溢出时间 */
+    rt_uint32_t timeout = 10;    /* 溢出时间 */
 
     /* 根据设备名称查找看门狗设备，获取设备句柄 */
     wdg_dev = rt_device_find(IWDG_DEVICE_NAME);