diff --git a/devops/renew-cf-dns-record.sh b/devops/renew-cf-dns-record.sh
new file mode 100644
index 0000000..f714c47
--- /dev/null
+++ b/devops/renew-cf-dns-record.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+if [ "$#" -lt 5 ] ;then
+    echo "Renew Cloudflare DNS Record"
+    echo
+    echo " Usage: $0 <email> <app-key> <zone-id> <record-id> <domain>"
+    exit
+fi
+
+EMAIL=$1
+API_KEY=$2
+ZONE_ID=$3
+RECORD_ID=$4
+DOMAIN=$5
+
+IP=$(curl -s https://myip.ipip.net |  awk -F'：' '{print $2}' | awk -F' ' '{print $1}')
+grep -qF "$IP" /tmp/myip && echo "Unchanged since last renewal, do nothing" && exit
+
+curl -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
+     -H "X-Auth-Email: $EMAIL" \
+     -H "X-Auth-Key: $API_KEY" \
+     -H "Content-Type: application/json" \
+     --data '{"type": "A", "name": "'"$DOMAIN"'", "content": "'"$IP"'"}'
+
+echo "$IP" > /tmp/myip
\ No newline at end of file