diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/rtc/rtc.md b/rt-thread-version/rt-thread-standard/programming-manual/device/rtc/rtc.md
index 2f6b858860bf89ec2539440e22eaed25e7158dcb..b505ee863f3906d5236822888368e2281f724ba3 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/rtc/rtc.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/rtc/rtc.md
@@ -172,10 +172,28 @@ RTC 设备的具体使用方式可以参考如下示例代码，首先设置了
 #include <rtthread.h>
 #include <rtdevice.h>
 
+#define RTC_NAME       "rtc"
+
 static int rtc_sample(int argc, char *argv[])
 {
     rt_err_t ret = RT_EOK;
     time_t now;
+    rt_device_t device = RT_NULL;
+
+    /*寻找设备*/
+    device = rt_device_find(RTC_NAME);
+    if (!device)
+    {
+      LOG_E("find %s failed!", RTC_NAME);
+      return RT_ERROR;
+    }
+
+    /*初始化RTC设备*/
+    if(rt_device_open(device, 0) != RT_EOK)
+    {
+      LOG_E("open %s failed!", RTC_NAME);
+      return RT_ERROR;
+    }
 
     /* 设置日期 */
     ret = set_date(2018, 12, 3);