diff --git a/APP_Framework/Framework/connection/4g/ec200t/Kconfig b/APP_Framework/Framework/connection/4g/ec200t/Kconfig
index a4b43b7ef..404fb381f 100644
--- a/APP_Framework/Framework/connection/4g/ec200t/Kconfig
+++ b/APP_Framework/Framework/connection/4g/ec200t/Kconfig
@@ -39,13 +39,31 @@ if ADD_NUTTX_FETURES
 endif
 
 if ADD_RTTHREAD_FETURES
-        config ADAPTER_EC200T_DRIVER
-                string "EC200T device uart driver path"
-                default "/dev/uart2"
-        config ADAPTER_EC200T_PIN_DRIVER
-                string "EC200T device pin driver path"
-                default "/dev/pin"
         config ADAPTER_EC200T_PWRKEY
                 int "EC200T PWRKEY pin number"
-                default "97"              
+                default "97"
+        config ADAPTER_EC200T_PIN_DRIVER
+                string "EC200T device pin driver path"
+                default "/dev/pin_dev"
+
+        config ADAPTER_EC200T_DRIVER_EXTUART
+                bool "Using extra uart to support 4G"
+                default n
+
+        config ADAPTER_EC200T_DRIVER
+                string "EC200T device uart driver path"
+                default "/dev/usart8"
+                depends on !ADAPTER_EC200T_DRIVER_EXTUART
+
+        if ADAPTER_EC200T_DRIVER_EXTUART                    
+                config ADAPTER_EC200T_DRIVER
+                        string "EC200T device extra uart driver path"
+                        default "/dev/extuart_dev5"
+
+                config ADAPTER_EC200T_DRIVER_EXT_PORT
+                        int "if EC200T device using extuart, choose port"
+                        default "5"
+        endif
+
+
 endif