diff --git a/rk3308/dueros/watch_dueros_service.sh b/rk3308/dueros/watch_dueros_service.sh
index 6167197..c789f8c 100755
--- a/rk3308/dueros/watch_dueros_service.sh
+++ b/rk3308/dueros/watch_dueros_service.sh
@@ -4,7 +4,7 @@ sleep 5
 
 while true;do
     pid_num=`pidof duer_linux alsa_audio_main_service | wc -w`
-    if [ $pid_num -ne 2 ] ;then
+    if [ $pid_num -lt 2 ] ;then
         echo "duer_linux|alsa_audio_main_service died, restart it."
         /oem/dueros_service.sh restart
     fi