diff --git a/tests/testcases/Group9-Content-trust/9-01-DB-user-push-signed-images.md b/tests/testcases/Group9-Content-trust/9-01-DB-user-push-signed-images.md
index 58da6a4d3..967bba24a 100644
--- a/tests/testcases/Group9-Content-trust/9-01-DB-user-push-signed-images.md
+++ b/tests/testcases/Group9-Content-trust/9-01-DB-user-push-signed-images.md
@@ -14,9 +14,16 @@ User guide
 * A Linux host with Docker CLI installed (Docker client).  
 
 # Test Steps:
+**NOTE:**  
+In below test, <harbor_ip> should be replaced by your harbor's ip or FQDN. If you are using a self-signed certificate,make sure to copy the CA root cert into ```/etc/docker/certs.d/<harbor_ip>``` and ```$HOME/.docker/tls/<harbor_ip>:4443/```  
 
 1. Login UI and create a project.  
-2. On Docker clinet, follow [Set up notary](../../../../docs/use_notary.md) to set up notary and login Harbor.  
+2. On Docker clinet, run  
+```sh
+export DOCKER_CONTENT_TRUST=1
+export DOCKER_CONTNET_TRUST_SERVER=https://<harbor_ip>:4443
+```
+and login Harbor.  
 3. Push an image to the project created in step1.  
 
 
diff --git a/tests/testcases/Group9-Content-trust/9-03-DB-user-pull-signed-images.md b/tests/testcases/Group9-Content-trust/9-03-DB-user-pull-signed-images.md
index 33e4e263c..ab8b0a704 100644
--- a/tests/testcases/Group9-Content-trust/9-03-DB-user-pull-signed-images.md
+++ b/tests/testcases/Group9-Content-trust/9-03-DB-user-pull-signed-images.md
@@ -14,11 +14,16 @@ User guide
 * A Linux machine with Docker CLI(Docker client) installed.
 
 # Test Steps:
-NOTE:  
-In below test, project X should be replaced by an existing project.
+**NOTE:**  
+In below test, project X should be replaced by an existing project and <harbor_ip> should be replaced by your harbor's ip or FQDN. If you are using a self-signed certificate,make sure to copy the CA root cert into ```/etc/docker/certs.d/<harbor_ip>``` and ```$HOME/.docker/tls/<harbor_ip>:4443/```  
 
 1. Login UI.
-2. On Docker client, follow [Set up notary](../../../../docs/use_notary.md) to set up notary and login Harobr.  
+2. On Docker client, run 
+```sh
+export DOCKER_CONTENT_TRUST=1  
+export DOCKER_CONTENT_TRUST_SERVER=https://<harbor_ip>:4443  
+```
+and login Harobr.  
 3. Pull an image from project X.  
 
 # Expected Outcome:
diff --git a/tests/testcases/Group9-Content-trust/9-05-DB-user-delete-signed-images.md b/tests/testcases/Group9-Content-trust/9-05-DB-user-delete-signed-images.md
index 0ab148f56..16867c3cc 100644
--- a/tests/testcases/Group9-Content-trust/9-05-DB-user-delete-signed-images.md
+++ b/tests/testcases/Group9-Content-trust/9-05-DB-user-delete-signed-images.md
@@ -14,9 +14,16 @@ User guide
 * A Linux host with Docker CLI(Docker client) installed.  
 
 # Test Steps:
+**NOTE:**  
+In below test,<harbor_ip> should be replaced by your harbor's ip or FQDN. If you are using a self-signed certificate,make sure to copy the CA root cert into ```/etc/docker/certs.d/<harbor_ip>``` and ```$HOME/.docker/tls/<harbor_ip>:4443/```  
 
 1. Login UI and create a project.  
-2. On a Docker client,follow [Set up notary](../../../../docs/use_notary.md) to set up notary and login Harbor.  
+2. On a Docker client,run 
+```sh
+export DOCKER_CONTENT_TRUST=1
+export DOCKER_CONTENT_TRUST_SERVER=https://<harbor_ip>:4443
+``` 
+and login Harbor.  
 3. Push an image to project created in step1.  
 4. Delete the pushed image.  
 5. Delete notary tag according to message from UI in step4.