diff --git a/packages/engine/package.json b/packages/engine/package.json
index 6b3d1b340..c7cc4354e 100644
--- a/packages/engine/package.json
+++ b/packages/engine/package.json
@@ -13,7 +13,7 @@
     "start": "build-scripts start",
     "version:update": "node ./scripts/version.js",
     "build": "build-scripts build --skip-demo",
-    "cloud-build": "build-scripts build --config build.cloud.json && tnpm run version:update",
+    "cloud-build": "build-scripts build --config build.cloud.json && tnpm run version:update && node ./scripts/add-blank-line.js",
     "test": "build-scripts test --config build.test.json"
   },
   "license": "MIT",
diff --git a/packages/engine/scripts/add-blank-line.js b/packages/engine/scripts/add-blank-line.js
new file mode 100644
index 000000000..11cddadf1
--- /dev/null
+++ b/packages/engine/scripts/add-blank-line.js
@@ -0,0 +1,19 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+/* eslint-disable @typescript-eslint/no-require-imports  */
+const { join } = require('path');
+const fse = require('fs-extra');
+
+
+const distDir = join(__dirname, '../dist');
+
+const distFileNames = ['engine.js', 'engine-core.js'];
+
+distFileNames.forEach(name => {
+  const distFile = join(distDir, 'js', name);
+
+  const indexContent = fse.readFileSync(distFile, 'utf-8') + '\n';
+
+  fse.writeFileSync(distFile, indexContent);
+});
+
+console.log('[engine] add a blank line successfully!');