diff --git a/.github/workflows/fb-post-when-pr-merged.yaml b/.github/workflows/fb-post-when-pr-merged.yaml
new file mode 100644
index 000000000..8255e982d
--- /dev/null
+++ b/.github/workflows/fb-post-when-pr-merged.yaml
@@ -0,0 +1,33 @@
+name: FB-POST
+on: [push]
+jobs:
+  FB-POST:
+    name: FB-POST
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'pull_request' }}
+    steps:
+      - name: 'Check if PR has been opened/re-opened'
+        id: opened
+        if: github.event.action == 'opened' || github.event.action == 'reopened'
+        run: echo "::set-output name=status::opened"
+      - name: 'Check if PR have been closed'
+        id: closed
+        if: github.event.action == 'closed' && github.event.pull_request.merged == false
+        run: echo "::set-output name=status::closed" 
+      - name: 'Check if PR have been merged'
+        id: merged
+        if:  github.event.action == 'closed' && github.event.pull_request.merged == true
+        run: echo "::set-output name=status::merged"
+      - uses: actions/checkout@master
+      - name: send custom message
+        uses: hungran/fb-post-action@main
+        env:
+          FACEBOOK_ACCESS_TOKEN: ${{ secrets.FACEBOOK_ACCESS_TOKEN }}
+          FACEBOOK_PAGE_ID: ${{ secrets.FACEBOOK_PAGE_ID }}
+          FACEBOOK_POST_MESSAGE: |
+            Bài Viết mới được đăng bởi **`${{ github.actor }}`** 🎉
+            🎉 **`${{ github.actor }}`** has been ${{join(steps.*.outputs.status, ' and ')}} a Pull Request 🍻
+            Repository: ${{ github.repository }}
+            Title: ${{ github.event.pull_request.title }} #${{ github.event.pull_request.number }}
+            Link: ${{ github.event.pull_request.html_url }}
+            Description: ${{ github.event.pull_request.body }}