diff --git a/package/lean/luci-app-flowoffload/root/etc/init.d/flowoffload b/package/lean/luci-app-flowoffload/root/etc/init.d/flowoffload
index 32b8f82e77..89c5e8d5ba 100755
--- a/package/lean/luci-app-flowoffload/root/etc/init.d/flowoffload
+++ b/package/lean/luci-app-flowoffload/root/etc/init.d/flowoffload
@@ -231,6 +231,8 @@ start_service(){
 	if [ $dns -eq 1 ];  then
 		stop_dnscache
 		sleep 1
+		rm -f /var/log/dnscache.file
+		rm -f /etc/AdGuardHome/data/querylog.json*
 		if [ $dnscache_enable = "1" ];  then
 			start_pdnsd
 		elif [ $dnscache_enable = "2" ];  then
diff --git a/package/lean/luci-app-flowoffload/root/usr/share/dnscache/dnscache-while.sh b/package/lean/luci-app-flowoffload/root/usr/share/dnscache/dnscache-while.sh
index fe6fc0665c..57f0bdad23 100755
--- a/package/lean/luci-app-flowoffload/root/usr/share/dnscache/dnscache-while.sh
+++ b/package/lean/luci-app-flowoffload/root/usr/share/dnscache/dnscache-while.sh
@@ -2,6 +2,7 @@
 
 sleeptime=60
 logfile="/var/log/dnscache.file"
+adg_logfile="/etc/AdGuardHome/data/querylog.json"
 dns_enable=$(uci get flowoffload.@flow[0].dns 2>/dev/null)
 dnscache_enable=$(uci get flowoffload.@flow[0].dnscache_enable 2>/dev/null)
 
@@ -11,7 +12,12 @@ if [ $logrow -ge 500 ];then
     cat /dev/null > ${logfile}
     echo "$curtime Log条数超限，清空处理！" >> ${logfile}
 fi
-
+if [ $dnscache_enable = "3" ];then
+	adg_logrow=$(grep -c "" ${adg_logfile})
+	if [ $logrow -ge 500 ];then
+		cat /dev/null > ${adg_logfile}
+		echo "$curtime Log条数超限，清空处理！" >> ${adg_logfile}
+	fi
 }
 
 while [ $dns_enable -eq 1 ];
@@ -19,23 +25,24 @@ do
 curtime=`date "+%H:%M:%S"`
 echo "$curtime online! "
 if [ $dns_enable -eq 1 ]; then
-	if [ $dnscache_enable = "3" ];  then
-		if ! pidof AdGuardHome>/dev/null; then
+	if [ $dnscache_enable = "3" ];then
+		if ! pidof AdGuardHome>/dev/null;then
 			AdGuardHome -c /etc/AdGuardHome/AdGuardHome.yaml -w /etc/AdGuardHome >/dev/null 2>&1 &
 			echo "$curtime 重启服务！" >> ${logfile}
 		fi
 	else
 		if ! pidof dnscache>/dev/null; then
-			if [ $dnscache_enable = "1" ];  then
-			/usr/sbin/dnscache -c /var/etc/dnscache.conf -d
-			elif [ $dnscache_enable = "2" ];  then
-			dnscache -f /var/run/dnscache/dnscache.conf -d
+			if [ $dnscache_enable = "1" ];then
+				/usr/sbin/dnscache -c /var/etc/dnscache.conf -d
+			elif [ $dnscache_enable = "2" ];then
+				dnscache -f /var/run/dnscache/dnscache.conf -d
 			fi
 			echo "$curtime 重启服务！" >> ${logfile}
 		fi
 	fi
 fi
 
+clean_log
 sleep ${sleeptime}
 continue
 done