diff --git a/.github/actions/publish-to-cos/action.yml b/.github/actions/publish-to-cos/action.yml
new file mode 100644
index 0000000..3a59a68
--- /dev/null
+++ b/.github/actions/publish-to-cos/action.yml
@@ -0,0 +1,22 @@
+name: Publish to Tencent Cloud COS
+description: Publish static files to Tencent Cloud Object Storage
+
+runs:
+  using: composite
+  steps:
+    - name: Setup Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.11'
+
+    - name: Install coscmd
+      run: pip install coscmd
+      shell: bash
+
+    - name: Configure coscmd
+      run: coscmd config -a $SECRET_ID -s $SECRET_KEY -b nk2028-1305783649 -r ap-guangzhou
+      shell: bash
+
+    - name: Publish static files to COS
+      run: coscmd upload -rs --delete -f . /tshet-uinh-examples --ignore '*/.*,*/node_modules/*,./test/*,./build/*,./dist/*,./package.json,./package-lock.json,./eslint.config.js'
+      shell: bash
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index abd9478..96e2624 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -35,28 +35,15 @@ jobs:
       - name: Run tests
         run: npm test
 
-      # Publish to NPM
       - if: github.event_name == 'release'
         name: Publish to NPM
         run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{ secrets.npm_token }}
 
-      # Publish to Tencent Cloud COS
       - if: github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && github.repository == 'nk2028/tshet-uinh-examples' && github.ref == 'refs/heads/main')
-        name: Setup Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-      - if: github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && github.repository == 'nk2028/tshet-uinh-examples' && github.ref == 'refs/heads/main')
-        name: Install coscmd
-        run: pip install coscmd
-      - if: github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && github.repository == 'nk2028/tshet-uinh-examples' && github.ref == 'refs/heads/main')
-        name: Configure coscmd
+        name: Publish to Tencent Cloud COS
+        uses: ./.github/actions/publish-to-cos
         env:
           SECRET_ID: ${{ secrets.SecretId }}
           SECRET_KEY: ${{ secrets.SecretKey }}
-        run: coscmd config -a $SECRET_ID -s $SECRET_KEY -b nk2028-1305783649 -r ap-guangzhou
-      - if: github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && github.repository == 'nk2028/tshet-uinh-examples' && github.ref == 'refs/heads/main')
-        name: Publish static files to COS
-        run: coscmd upload -rs --delete -f . /tshet-uinh-examples --ignore '*/.*,*/node_modules/*,./test/*,./build/*,./dist/*,./package.json,./package-lock.json,./eslint.config.js'