Add notice
diff --git a/README.md b/README.md
index c3e36a5..31f87b8 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,8 @@
     * `cd dubbo-admin-distribution/target; java -jar dubbo-admin-${project.version}.jar`
 5. Visit  `http://localhost:38080`, default username and password are `root`
 
+> **Security Notice: Please remember to change the `admin.check.signSecret`, `admin.root.user.name` and `admin.root.user.password` before you deploy to production environment.**
+
 ## 1.2 Run with Docker
 
 > **Note: This method only supports running under linux system. Docker support for windows and mac systems will be released soon!**
@@ -50,8 +52,13 @@
 ```properties
 admin.registry.address=zookeeper://127.0.0.1:2181
 admin.config-center=zookeeper://127.0.0.1:2181
+admin.root.user.name=root
+admin.root.user.password=root
+admin.check.signSecret=86295dd0c4ef69a1036b0b0c15158d77
 ```
 
+> **Security Notice: Please remember to change the `admin.check.signSecret`, `admin.root.user.name` and `admin.root.user.password` before you deploy to production environment.**
+
 Open web browser and visit `http://localhost:38080`, default username and password are `root`.
 
 ## 1.3 Run with Kubernetes
@@ -70,6 +77,8 @@
 
 Open `configmap.yaml` and modify accordingly to override configurations in [application.properties](./dubbo-admin-server/src/main/resources/application.properties).
 
+> **Security Notice: Please remember to change the `admin.check.signSecret`, `admin.root.user.name` and `admin.root.user.password` before you deploy to production environment.**
+
 Run the following command:
 
 ```sh
@@ -108,8 +117,13 @@
   admin.registry.address: zookeeper://zookeeper:2181
   admin.config-center: zookeeper://zookeeper:2181
   admin.metadata-report.address: zookeeper://zookeeper:2181
+  admin.root.user.name: root
+  admin.root.user.password: root
+  admin.check.signSecret: 86295dd0c4ef69a1036b0b0c15158d77
 ```
 
+> **Security Notice: Please remember to change the `admin.check.signSecret`, `admin.root.user.name` and `admin.root.user.password` before you deploy to production environment.**
+
 ```sh
 $ helm install dubbo-admin -f values.yaml .
 ```
diff --git a/charts/admin-stack/README.md b/charts/admin-stack/README.md
index 13c8196..19c9fdc 100644
--- a/charts/admin-stack/README.md
+++ b/charts/admin-stack/README.md
@@ -1,3 +1,5 @@
+> **Security Notice: Please remember to change the `admin.check.signSecret`, `admin.root.user.name` and `admin.root.user.password` before you deploy to production environment.**
+
 ## 1. Project download to local
 ```
 git clone https://github.com/apache/dubbo-admin.git
@@ -11,4 +13,4 @@
 ## 3. Install dubbo-admin
 ```
 helm install dubbo-admin -f values.yaml .
-```
\ No newline at end of file
+```