diff --git a/docs/API_reference/en/syslib/fota.md b/docs/API_reference/en/syslib/fota.md
index 6c94f2c7a7baec3eb11af13fb433571516fd010c..0a78f322a87b9974d423925ab6ab09ff4b8d88b7 100644
--- a/docs/API_reference/en/syslib/fota.md
+++ b/docs/API_reference/en/syslib/fota.md
@@ -10,26 +10,36 @@
 import fota
 import utime
 import log
+import checkNet
 
 # Sets the log output level
 log.basicConfig(level=log.INFO)
 fota_log = log.getLogger("Fota")
 
+PROJECT_NAME = "QuecPython_fota_example"
+PROJECT_VERSION = "1.0.0"
+
+checknet = checkNet.CheckNetwork(PROJECT_NAME, PROJECT_VERSION)
+
 def result(args):
     print('download status:',args[0],'download process:',args[1])
-    
+  
 def run():
-    fota_obj = fota()  # Creates a FOTA object
-    fota_log.info("httpDownload...")
-    # Methods of DFOTA upgrades
-    res = fota_obj.httpDownload(url1="http://www.example.com/fota.bin",callback=result)    
-    # Methods of mini FOTA
-    #res = fota_obj.httpDownload(url1="http://www.example.com/fota1.bin",url2="http://www.example.com/fota2.bin")
-    if res != 0:
-        fota_log.error("httpDownload error")
-        return
-    fota_log.info("wait httpDownload update...")
-    utime.sleep(2)
+    stagecode, subcode = checknet.wait_network_connected(30)
+    if stagecode == 3 and subcode == 1:
+    	fota_obj = fota()  # Creates a FOTA object
+    	fota_log.info("httpDownload...")
+    	# Methods of DFOTA upgrades
+    	res = fota_obj.httpDownload(url1="http://www.example.com/fota.bin",callback=result)  
+    	# Methods of mini FOTA
+    	#res = fota_obj.httpDownload(url1="http://www.example.com/fota1.bin",url2="http://www.example.com/fota2.bin")
+    	if res != 0:
+        	fota_log.error("httpDownload error")
+        	return
+    	fota_log.info("wait httpDownload update...")
+    	utime.sleep(2)
+    else:
+        socket_log.info('Network connection failed! stagecode = {}, subcode = {}'.format(stagecode, subcode))
 
 if __name__ == '__main__':
     fota_log.info("run start...")
diff --git a/docs/API_reference/zh/syslib/fota.md b/docs/API_reference/zh/syslib/fota.md
index f462f1b3d9e1b5ec65d0d64af7cbd6f6724fa075..dd165b6b6f97c3daf1e7f284e270f7a5e2549e03 100644
--- a/docs/API_reference/zh/syslib/fota.md
+++ b/docs/API_reference/zh/syslib/fota.md
@@ -10,28 +10,38 @@
 import fota
 import utime
 import log
+import checkNet
 
 # 设置日志输出级别
 log.basicConfig(level=log.INFO)
 fota_log = log.getLogger("Fota")
 
+PROJECT_NAME = "QuecPython_fota_example"
+PROJECT_VERSION = "1.0.0"
+
+checknet = checkNet.CheckNetwork(PROJECT_NAME, PROJECT_VERSION)
+
 def result(args):
     print('download status:',args[0],'download process:',args[1])
-    
+  
 def run():
-    fota_obj = fota()  # 创建Fota对象
-    fota_log.info("httpDownload...")
-    #差分升级方式
-    res = fota_obj.httpDownload(url1="http://www.example.com/fota.bin",callback=result)    
-    #mini fota方式
-    #res = fota_obj.httpDownload(url1="http://www.example.com/fota1.bin",url2="http://www.example.com/fota2.bin")
-    #差分升级FTP方式  
-    #res = fota_obj.httpDownload(url1="ftp://user:password@ip:port/fota.bin",callback=result) #其中user,password,ip,port需要填写具体使用的FTP服务器信息
-    if res != 0:
-        fota_log.error("httpDownload error")
-        return
-    fota_log.info("wait httpDownload update...")
-    utime.sleep(2)
+    stagecode, subcode = checknet.wait_network_connected(30)
+    if stagecode == 3 and subcode == 1:
+    	fota_obj = fota()  # 创建Fota对象
+    	fota_log.info("httpDownload...")
+    	#差分升级方式
+    	res = fota_obj.httpDownload(url1="http://www.example.com/fota.bin",callback=result)  
+    	#mini fota方式
+    	#res = fota_obj.httpDownload(url1="http://www.example.com/fota1.bin",url2="http://www.example.com/fota2.bin")
+    	#差分升级FTP方式  
+    	#res = fota_obj.httpDownload(url1="ftp://user:password@ip:port/fota.bin",callback=result) #其中user,password,ip,port需要填写具体使用的FTP服务器信息
+    	if res != 0:
+        	fota_log.error("httpDownload error")
+        	return
+    	fota_log.info("wait httpDownload update...")
+    	utime.sleep(2)
+    else:
+        socket_log.info('Network connection failed! stagecode = {}, subcode = {}'.format(stagecode, subcode))
 
 if __name__ == '__main__':
     fota_log.info("run start...")