diff --git a/src/pages/Welcome/LearningDirectionList.tsx b/src/pages/Welcome/LearningDirectionList.tsx
index 4acdf07..17dbd5a 100644
--- a/src/pages/Welcome/LearningDirectionList.tsx
+++ b/src/pages/Welcome/LearningDirectionList.tsx
@@ -69,8 +69,8 @@ const data: Array<LDirection> = [
         style: { marginTop: "2em" }
     }, {
         name: "APP开发",
-        key: "Android",
-        logo: Logo.Android,
+        key: "AppDev",
+        logo: Logo.AppDev,
         width: 150
     }, {
         name: "UI设计",
diff --git a/src/static/cos.ts b/src/static/cos.ts
index 08010ac..607341b 100644
--- a/src/static/cos.ts
+++ b/src/static/cos.ts
@@ -12,7 +12,7 @@ export const Logo = {
   Kexie: `${BaseUrl}/images/logo.png`,
   Web: `${BaseUrl}/images/learning-direction/react.png`,
   Game: `${BaseUrl}/images/learning-direction/unity.png`,
-  Android: `${BaseUrl}/images/learning-direction/android.png`,
+  AppDev: `${BaseUrl}/images/learning-direction/appdevlogo.png`,
   UI: `${BaseUrl}/images/learning-direction/ui.png`,
   Embedded: `${BaseUrl}/images/learning-direction/embedded.svg`,
   DeepLearning: `${BaseUrl}/images/learning-direction/python.png`,