diff --git a/rk3308/dueros/RkLunch.sh b/rk3308/dueros/RkLunch.sh
index 3ca6856..fdd0b1b 100755
--- a/rk3308/dueros/RkLunch.sh
+++ b/rk3308/dueros/RkLunch.sh
@@ -3,7 +3,6 @@
 # rm /tmp/test.pcm
 # echo 0x60 0x40ff0040 > /sys/kernel/debug/vad/reg
 # echo 0x5c 0x000e2080 > /sys/kernel/debug/vad/reg
-# mkdir -p /data/local/ipc
 
 cd /data/
 
@@ -21,6 +20,7 @@ ifconfig lo 127.0.0.1 netmask 255.255.255.0
 killall dhcpcd
 killall hostapd
 killall dnsmasq
+killall ueventd
 
 aplay /usr/appresources/startup.wav &
 
@@ -30,3 +30,5 @@ aplay /usr/appresources/startup.wav &
 
 # start dueros
 /oem/dueros_service.sh start
+
+/oem/watch_dueros_service.sh &
diff --git a/rk3308/dueros/dueros_service.sh b/rk3308/dueros/dueros_service.sh
index 05774bd..0ed2936 100755
--- a/rk3308/dueros/dueros_service.sh
+++ b/rk3308/dueros/dueros_service.sh
@@ -4,7 +4,7 @@
 
 case "$1" in
   start)
-        echo "Starting $0..."
+	echo "Starting $0..."
 
 	# start audio preProcess
 	ln -s /oem/baidu_spil_rk3308/* /data/ -f
@@ -19,18 +19,22 @@ case "$1" in
 	ln -s /usr/lib . -f
 	ln -s /usr/appresources . -f
 	ln -s /oem/duer/* . -f
-	./duer_linux & 
-        ;;
+	./duer_linux &
+	;;
   stop)
-        echo "Stop $0..."
-        killall alsa_audio_main_service
+	echo "Stop $0..."
+	killall alsa_audio_main_service
 	killall duer_linux
-        ;;
+	;;
   restart|reload)
-        ;;
+	killall alsa_audio_main_service
+	killall duer_linux
+	cd /data && ./alsa_audio_main_service 6mic_loopback &
+	cd /data/duer && ./duer_linux &
+	;;
   *)
-        echo "Usage: $0 {start|stop|restart}"
-        exit 1
+	echo "Usage: $0 {start|stop|restart}"
+	exit 1
 esac
 
 exit $?
diff --git a/rk3308/dueros/watch_dueros_service.sh b/rk3308/dueros/watch_dueros_service.sh
new file mode 100755
index 0000000..20d2562
--- /dev/null
+++ b/rk3308/dueros/watch_dueros_service.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+sleep 3
+
+while true;do
+    pid=`ps aux | grep duer_linux | grep -v grep | busybox awk '{print \$1}'`
+    if [ "$pid" = "" ];then
+        echo "duer_linux died, restart it."
+        /oem/dueros_service.sh restart
+    fi
+    sleep 2
+done