diff --git a/packages/mars-core/types/mars.d.ts b/packages/mars-core/types/mars.d.ts
index af50f2b6..b1ad4b12 100644
--- a/packages/mars-core/types/mars.d.ts
+++ b/packages/mars-core/types/mars.d.ts
@@ -4,7 +4,8 @@ import {
     swanApiOptionsGetStorage,
     backgroundAudioManager,
     swanApiOptionsRecognizeImage,
-    swanApiOptionsSetKeepScreenOn
+    swanApiOptionsSetKeepScreenOn,
+    systemInfo
 } from './swan';
 declare global {
     const getApp: () => swanApp;
@@ -54,4 +55,5 @@ export interface marsApis {
         exec: (options?: any) => void;
     };
     setKeepScreenOn: (options?: swanApiOptionsSetKeepScreenOn) => Promise<any>;
+    getSystemInfo: () => Promise<systemInfo>;
 }
\ No newline at end of file
diff --git a/packages/mars-core/types/swan.d.ts b/packages/mars-core/types/swan.d.ts
index 4ec6cf65..c91a7664 100644
--- a/packages/mars-core/types/swan.d.ts
+++ b/packages/mars-core/types/swan.d.ts
@@ -8,6 +8,7 @@ export interface swan {
     navigateToSmartProgram: (options: swanApiOptionsNavigateToSmartProgram) => void;
     getStorage: (options: swanApiOptionsGetStorage) => void;
     setNavigationBarTitle: (options: swanApiOptionsSetNavigationBarTitle) => void;
+    isLoginSync: (options?: any) => {isLogin: boolean};
 }
 
 interface swanApiOptionsBase {
@@ -86,7 +87,7 @@ export interface swanApiOptionsRecognizeImage extends swanApiOptionsBase {
     showTitle?: boolean;
 }
 
-interface systemInfo {
+export interface systemInfo {
     brand: string;
     model: string;
     pixelRatio: string;
@@ -115,4 +116,3 @@ export interface backgroundAudioManager {
     pause: () => void;
     src: string;
 }
-