diff --git a/packages/client-android/android/app/build.gradle b/packages/client-android/android/app/build.gradle
new file mode 100644
index 0000000..8da84e8
--- /dev/null
+++ b/packages/client-android/android/app/build.gradle
@@ -0,0 +1,38 @@
+apply plugin: "com.android.application"
+apply plugin: "org.jetbrains.kotlin.android"
+
+android {
+    namespace "dev.yuzu.gca"
+    compileSdk rootProject.ext.compileSdkVersion
+
+    defaultConfig {
+        applicationId "dev.yuzu.gca"
+        minSdk rootProject.ext.minSdkVersion
+        targetSdk rootProject.ext.targetSdkVersion
+        versionCode 4
+        versionName "0.1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+        }
+        debug {
+            debuggable true
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+}
+
+dependencies {
+    implementation("com.facebook.react:react-android")
+    implementation("com.facebook.react:hermes-android")
+}
diff --git a/packages/client-android/android/app/src/main/AndroidManifest.xml b/packages/client-android/android/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..335b475
--- /dev/null
+++ b/packages/client-android/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
+
+    <application
+        android:name=".MainApplication"
+        android:label="Yuzu GCA"
+        android:icon="@mipmap/ic_launcher"
+        android:allowBackup="false"
+        android:supportsRtl="true"
+        android:usesCleartextTraffic="true">
+
+        <activity
+            android:name=".MainActivity"
+            android:label="Yuzu GCA"
+            android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"
+            android:launchMode="singleTask"
+            android:windowSoftInputMode="adjustResize"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainActivity.kt b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainActivity.kt
new file mode 100644
index 0000000..3f9bb53
--- /dev/null
+++ b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainActivity.kt
@@ -0,0 +1,18 @@
+package dev.yuzu.gca
+
+import android.os.Bundle
+import com.facebook.react.ReactActivity
+import com.facebook.react.ReactActivityDelegate
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.fabricEnabled
+import com.facebook.react.defaults.DefaultReactActivityDelegate
+
+class MainActivity : ReactActivity() {
+    override fun getMainComponentName(): String = "main"
+
+    override fun createReactActivityDelegate(): ReactActivityDelegate =
+        DefaultReactActivityDelegate(this, mainComponentName, fabricEnabled)
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(null)
+    }
+}
diff --git a/packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainApplication.kt b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainApplication.kt
new file mode 100644
index 0000000..9626378
--- /dev/null
+++ b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/MainApplication.kt
@@ -0,0 +1,40 @@
+package dev.yuzu.gca
+
+import android.app.Application
+import com.facebook.react.PackageList
+import com.facebook.react.ReactApplication
+import com.facebook.react.ReactHost
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
+import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.defaults.DefaultReactNativeHost
+import com.facebook.soloader.SoLoader
+
+class MainApplication : Application(), ReactApplication {
+
+    override val reactNativeHost: ReactNativeHost =
+        object : DefaultReactNativeHost(this) {
+            override fun getPackages(): List<ReactPackage> =
+                PackageList(this).packages.apply {
+                    // 注册 PackageInstaller 原生模块
+                    add(PackageInstallerPackage())
+                }
+
+            override fun getJSMainModuleName(): String = "index"
+
+            override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
+
+            override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
+            override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+        }
+
+    override val reactHost: ReactHost
+        get() = getDefaultReactHost(applicationContext, reactNativeHost)
+
+    override fun onCreate() {
+        super.onCreate()
+        SoLoader.init(this, false)
+        if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) load()
+    }
+}
diff --git a/packages/client-android/android/app/src/main/java/dev/yuzu/gca/PackageInstallerModule.kt b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/PackageInstallerModule.kt
new file mode 100644
index 0000000..2d5bee9
--- /dev/null
+++ b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/PackageInstallerModule.kt
@@ -0,0 +1,92 @@
+package dev.yuzu.gca
+
+import android.app.PendingIntent
+import android.content.Intent
+import android.content.pm.PackageInstaller
+import com.facebook.react.bridge.*
+import java.io.File
+import java.io.FileInputStream
+import java.security.DigestInputStream
+import java.security.MessageDigest
+
+class PackageInstallerModule : ReactContextBaseJavaModule {
+    constructor(reactContext: ReactApplicationContext) : super(reactContext)
+
+    override fun getName(): String = "PackageInstallerModule"
+
+    @ReactMethod
+    fun installApk(filePath: String, expectedSha256: String, promise: Promise) {
+        try {
+            val context = reactApplicationContext
+            val apkFile = File(filePath)
+            if (!apkFile.exists()) {
+                promise.reject("FILE_NOT_FOUND", "安装包不存在")
+                return
+            }
+
+            if (!context.packageManager.canRequestPackageInstalls()) {
+                promise.reject("PERMISSION_DENIED", "REQUEST_INSTALL_PACKAGES 权限未授予")
+                return
+            }
+
+            val packageInstaller = context.packageManager.packageInstaller
+            val sessionParams = PackageInstaller.SessionParams(
+                PackageInstaller.SessionParams.MODE_FULL_INSTALL
+            )
+
+            val sessionId = packageInstaller.createSession(sessionParams)
+            val session = packageInstaller.openSession(sessionId)
+
+            try {
+                val sha256 = MessageDigest.getInstance("SHA-256")
+                FileInputStream(apkFile).use { input ->
+                    val digestStream = DigestInputStream(input, sha256)
+                    session.openWrite("package", 0, apkFile.length()).use { output ->
+                        digestStream.copyTo(output)
+                        session.fsync(output)
+                    }
+                }
+
+                val actualSha256 = sha256.digest().joinToString("") { "%02x".format(it) }
+                if (actualSha256 != expectedSha256) {
+                    promise.reject("SHA256_MISMATCH", "SHA256校验失败")
+                    return
+                }
+
+                val launchIntent = context.packageManager.getLaunchIntentForPackage(context.packageName)
+                    ?: run {
+                        promise.reject("NO_LAUNCH_INTENT", "无法获取启动Intent")
+                        return
+                    }
+                val pendingIntent = PendingIntent.getActivity(
+                    context, 0, launchIntent,
+                    PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+                )
+
+                session.commit(pendingIntent.intentSender)
+                promise.resolve("安装已提交")
+            } finally {
+                session.close()
+            }
+        } catch (e: Exception) {
+            promise.reject("INSTALL_ERROR", e.message)
+        }
+    }
+
+    @ReactMethod
+    fun sha256File(filePath: String, promise: Promise) {
+        try {
+            val digest = MessageDigest.getInstance("SHA-256")
+            FileInputStream(File(filePath)).use { input ->
+                val buf = ByteArray(8192)
+                var read: Int
+                while (input.read(buf).also { read = it } != -1) {
+                    digest.update(buf, 0, read)
+                }
+            }
+            promise.resolve(digest.digest().joinToString("") { "%02x".format(it) })
+        } catch (e: Exception) {
+            promise.reject("SHA256_ERROR", e.message)
+        }
+    }
+}
diff --git a/packages/client-android/android/app/src/main/java/dev/yuzu/gca/PackageInstallerPackage.kt b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/PackageInstallerPackage.kt
new file mode 100644
index 0000000..72146a0
--- /dev/null
+++ b/packages/client-android/android/app/src/main/java/dev/yuzu/gca/PackageInstallerPackage.kt
@@ -0,0 +1,16 @@
+package dev.yuzu.gca
+
+import com.facebook.react.ReactPackage
+import com.facebook.react.bridge.NativeModule
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.uimanager.ViewManager
+
+class PackageInstallerPackage : ReactPackage {
+    override fun createNativeModules(reactContext: ReactApplicationContext): List<NativeModule> {
+        return listOf(PackageInstallerModule())
+    }
+
+    override fun createViewManagers(reactContext: ReactApplicationContext): List<ViewManager<*, *>> {
+        return emptyList()
+    }
+}
diff --git a/packages/client-android/android/app/src/main/res/values/colors.xml b/packages/client-android/android/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..0e358ad
--- /dev/null
+++ b/packages/client-android/android/app/src/main/res/values/colors.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="primary">#3b82f6</color>
+    <color name="background">#0f172a</color>
+</resources>
diff --git a/packages/client-android/android/app/src/main/res/values/strings.xml b/packages/client-android/android/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..997f9bd
--- /dev/null
+++ b/packages/client-android/android/app/src/main/res/values/strings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Yuzu GCA</string>
+</resources>
diff --git a/packages/client-android/android/build.gradle b/packages/client-android/android/build.gradle
new file mode 100644
index 0000000..0e6996d
--- /dev/null
+++ b/packages/client-android/android/build.gradle
@@ -0,0 +1,26 @@
+// Top-level build file
+buildscript {
+    ext {
+        buildToolsVersion = "35.0.0"
+        minSdkVersion = 24
+        compileSdkVersion = 35
+        targetSdkVersion = 35
+        kotlinVersion = "2.0.21"
+    }
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath("com.android.tools.build:gradle:8.7.3")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}")
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        maven { url 'https://www.jitpack.io' }
+    }
+}
diff --git a/packages/client-android/android/gradle.properties b/packages/client-android/android/gradle.properties
new file mode 100644
index 0000000..3bccec9
--- /dev/null
+++ b/packages/client-android/android/gradle.properties
@@ -0,0 +1,5 @@
+org.gradle.jvmargs=-Xmx2048m -XX:MaxMetaspaceSize=512m
+android.useAndroidX=true
+android.enableJetifier=true
+newArchEnabled=true
+hermesEnabled=true
diff --git a/packages/client-android/android/gradle/wrapper/gradle-wrapper.properties b/packages/client-android/android/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..18330fc
--- /dev/null
+++ b/packages/client-android/android/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-all.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/packages/client-android/android/settings.gradle b/packages/client-android/android/settings.gradle
new file mode 100644
index 0000000..62b4fdb
--- /dev/null
+++ b/packages/client-android/android/settings.gradle
@@ -0,0 +1,6 @@
+rootProject.name = 'YuzuGCA'
+
+apply from: file("../node_modules/@react-native-community/cli-platform-android/native_modules.gradle")
+applyNativeModulesSettingsGradle(settings)
+
+include ':app'
diff --git a/packages/client-android/eas.json b/packages/client-android/eas.json
new file mode 100644
index 0000000..ca64b4e
--- /dev/null
+++ b/packages/client-android/eas.json
@@ -0,0 +1,23 @@
+{
+  "cli": {
+    "version": ">= 14.0.0"
+  },
+  "build": {
+    "preview": {
+      "android": {
+        "buildType": "apk",
+        "env": {
+          "APP_VERSION": "0.1.0"
+        }
+      }
+    },
+    "production": {
+      "android": {
+        "buildType": "apk"
+      }
+    }
+  },
+  "submit": {
+    "production": {}
+  }
+}