diff --git a/.azure-pipelines/BranchProtectionForPrivateRepo.yml b/.azure-pipelines/BranchProtectionForPrivateRepo.yml
index 7c913b101274..a826a8ecf271 100644
--- a/.azure-pipelines/BranchProtectionForPrivateRepo.yml
+++ b/.azure-pipelines/BranchProtectionForPrivateRepo.yml
@@ -2,7 +2,7 @@ jobs:
   - job: "BranchProtectionForPrivateRepo"
     pool:
       vmImage: 'Ubuntu 16.04'
-    condition: and(variables['PRIVATE'], eq(variables['System.PullRequest.TargetBranch'], 'master'))
+    condition: and(variables['PRIVATE'], eq(variables['System.PullRequest.TargetBranch'], 'main'))
     steps:
     - script: '>&2 echo "the branch is protected"'
       failOnStderr: true
diff --git a/.azure-pipelines/ShouldSendPRToMain.yml b/.azure-pipelines/ShouldSendPRToMain.yml
new file mode 100644
index 000000000000..d139949faeb0
--- /dev/null
+++ b/.azure-pipelines/ShouldSendPRToMain.yml
@@ -0,0 +1,8 @@
+jobs:
+  - job: "ShouldSendPRToMain"
+    pool:
+      vmImage: 'Ubuntu 16.04'
+    condition: eq(variables['System.PullRequest.TargetBranch'], 'master')
+    steps:
+    - script: '>&2 echo "##vso[task.logissue type=error]Please edit the pull request to targeting new default branch main"'
+      failOnStderr: true
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 41ce06e0ca5f..96faf6d58c8a 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -18,4 +18,5 @@ variables:
   PR_ONLY: 'true'
 
 jobs:
-- template: .azure-pipelines/BranchProtectionForPrivateRepo.yml
\ No newline at end of file
+- template: .azure-pipelines/BranchProtectionForPrivateRepo.yml
+- template: .azure-pipelines/ShouldSendPRToMain.yml
\ No newline at end of file