diff --git a/packages/core/src/App.ts b/packages/core/src/App.ts
index 45a65186..e6b78a15 100644
--- a/packages/core/src/App.ts
+++ b/packages/core/src/App.ts
@@ -29,7 +29,7 @@ import {
   triggerCommonMethod,
 } from './events';
 import Page from './Page';
-import { fillBackgroundImage, style2Obj } from './utils';
+import { fillBackgroundImage, isNumber, style2Obj } from './utils';
 
 interface AppOptionsConfig {
   ua?: string;
@@ -125,6 +125,9 @@ class App extends EventEmitter {
             if (transformKey === 'scale') {
               defaultValue = 1;
             }
+            if (transformKey === 'rotate' && isNumber(transformValue)) {
+              transformValue = `${transformValue}deg`;
+            }
             return `${transformKey}(${transformValue || defaultValue})`;
           })
           .join(' ');
diff --git a/packages/core/src/utils.ts b/packages/core/src/utils.ts
index 9cea7004..4a8c235a 100644
--- a/packages/core/src/utils.ts
+++ b/packages/core/src/utils.ts
@@ -53,3 +53,5 @@ export const fillBackgroundImage = (value: string) => {
   }
   return value;
 };
+
+export const isNumber = (value: string) => /^(-?\d+)(\.\d+)?$/.test(value);