diff --git a/kouyu_english/install_app.sh b/kouyu_english/install_app.sh
index df4e7eb..a54e6ac 100755
--- a/kouyu_english/install_app.sh
+++ b/kouyu_english/install_app.sh
@@ -1,35 +1,171 @@
 #!/bin/bash
 set -e
 
-# 进入项目根目录
 cd "$(dirname "$0")"
 
-echo "📱 检查连接的 Android 设备..."
-DEVICE_COUNT=$(adb devices | grep -v "List of devices" | grep "device$" | wc -l | tr -d ' ')
+BUILD_MODE="debug"
+TARGET=""
 
-if [ "$DEVICE_COUNT" -eq 0 ]; then
-  echo "❌ 未检测到连接的 Android 设备，请确保手机已开启 USB 调试并通过数据线连接！"
-  exit 1
+for arg in "$@"; do
+  case "$arg" in
+    android|apk)
+      TARGET="android"
+      ;;
+    mac|macos|desktop)
+      TARGET="mac"
+      ;;
+    all)
+      TARGET="all"
+      ;;
+    --release|-r)
+      BUILD_MODE="release"
+      ;;
+    --debug|-d)
+      BUILD_MODE="debug"
+      ;;
+    --help|-h)
+      echo "用法: ./install_app.sh [目标] [选项]"
+      echo ""
+      echo "目标 (可选):"
+      echo "  android   打包并安装到连接的 Android 真机"
+      echo "  mac       打包并安装到 macOS (/Applications) 并启动"
+      echo "  all       同时打包 Android 和 macOS 版本"
+      echo ""
+      echo "选项 (可选):"
+      echo "  --debug   编译 Debug 版本 (默认，构建更快)"
+      echo "  --release 编译 Release 版本 (体积更小，性能更好)"
+      echo "  -h, --help 显示帮助信息"
+      exit 0
+      ;;
+    *)
+      ;;
+  esac
+done
+
+# 如果未指定目标且处于交互终端，提示用户选择
+if [ -z "$TARGET" ]; then
+  if [ -t 0 ]; then
+    echo "========================================="
+    echo "  🌱 芽说英语 (Kouyu English) 打包安装工具"
+    echo "========================================="
+    echo "请选择要打包安装的目标平台："
+    echo "  1) Android 真机 (自动检测设备并安装)"
+    echo "  2) macOS 桌面版 (打包并安装到 /Applications 并启动)"
+    echo "  3) 全部 (Android + macOS)"
+    read -p "请输入序号 [1/2/3] (默认 1): " choice
+    case "$choice" in
+      2)
+        TARGET="mac"
+        ;;
+      3)
+        TARGET="all"
+        ;;
+      *)
+        TARGET="android"
+        ;;
+    esac
+  else
+    # 非交互模式下，优先检测 Android 设备
+    if adb devices 2>/dev/null | grep -v "List of devices" | grep -q "device$"; then
+      TARGET="android"
+    else
+      TARGET="mac"
+    fi
+  fi
 fi
 
-echo "📦 正在编译 Debug APK (包含最新的 assets 配置)..."
-flutter build apk --debug
+install_android() {
+  echo ""
+  echo "📱 ================= Android 打包与安装 ================="
+  echo "🔍 检查连接的 Android 设备..."
+  DEVICE_COUNT=$(adb devices 2>/dev/null | grep -v "List of devices" | grep "device$" | wc -l | tr -d ' ')
 
-APK_PATH="build/app/outputs/flutter-apk/app-debug.apk"
+  if [ "$DEVICE_COUNT" -eq 0 ]; then
+    echo "❌ 未检测到连接的 Android 设备，请确保手机已开启 USB 调试并通过数据线连接！"
+    return 1
+  fi
 
-if [ ! -f "$APK_PATH" ]; then
-  echo "❌ 找不到编译输出的 APK: $APK_PATH"
-  exit 1
-fi
+  echo "📦 正在编译 Android ${BUILD_MODE} APK (包含最新的 assets 配置)..."
+  if [ "$BUILD_MODE" = "release" ]; then
+    flutter build apk --release
+    APK_PATH="build/app/outputs/flutter-apk/app-release.apk"
+  else
+    flutter build apk --debug
+    APK_PATH="build/app/outputs/flutter-apk/app-debug.apk"
+  fi
 
-echo "🚀 正在安装 APK 到手机..."
-if ! adb install -r "$APK_PATH"; then
-  echo "⚠️ 覆盖安装失败（签名不一致或版本冲突），正在卸载旧版本并重新安装..."
-  adb uninstall com.shen.kouyu_english || true
-  adb install -r "$APK_PATH"
-fi
+  if [ ! -f "$APK_PATH" ]; then
+    echo "❌ 找不到编译输出的 APK: $APK_PATH"
+    return 1
+  fi
 
-echo "▶️ 正在手机上启动 开口英语 App..."
-adb shell monkey -p com.shen.kouyu_english -c android.intent.category.LAUNCHER 1 > /dev/null 2>&1 || true
+  echo "🚀 正在安装 APK 到手机..."
+  if ! adb install -r "$APK_PATH"; then
+    echo "⚠️ 覆盖安装失败（签名不一致或版本冲突），正在卸载旧版本并重新安装..."
+    adb uninstall com.shen.kouyu_english || true
+    adb install -r "$APK_PATH"
+  fi
 
-echo "✅ 安装并启动成功！"
+  echo "▶️ 正在手机上启动 芽说英语 App..."
+  adb shell monkey -p com.shen.kouyu_english -c android.intent.category.LAUNCHER 1 > /dev/null 2>&1 || true
+  echo "✅ Android 版本安装并启动成功！"
+}
+
+install_mac() {
+  echo ""
+  echo "🖥️  ================= macOS 打包与安装 ================="
+  echo "📦 正在编译 macOS ${BUILD_MODE} 应用..."
+  if [ "$BUILD_MODE" = "release" ]; then
+    flutter build macos --release
+    APP_SRC="build/macos/Build/Products/Release/kouyu_english.app"
+  else
+    flutter build macos --debug
+    APP_SRC="build/macos/Build/Products/Debug/kouyu_english.app"
+  fi
+
+  if [ ! -d "$APP_SRC" ]; then
+    echo "❌ 找不到编译输出的 macOS App: $APP_SRC"
+    return 1
+  fi
+
+  APP_NAME="芽说英语.app"
+  DEST_DIR="/Applications"
+  DEST_APP="$DEST_DIR/$APP_NAME"
+
+  echo "📂 正在安装到 $DEST_APP..."
+  # 检查是否有权限写入 /Applications，如果无权限则回退至 ~/Applications
+  if [ ! -w "$DEST_DIR" ]; then
+    DEST_DIR="$HOME/Applications"
+    mkdir -p "$DEST_DIR"
+    DEST_APP="$DEST_DIR/$APP_NAME"
+    echo "ℹ️  /Applications 无写入权限，改用 $DEST_APP"
+  fi
+
+  # 关闭可能正在运行的实例
+  pkill -f "芽说英语" 2>/dev/null || pkill -f "kouyu_english" 2>/dev/null || true
+  sleep 1
+
+  # 同步/拷贝应用
+  rm -rf "$DEST_APP"
+  cp -R "$APP_SRC" "$DEST_APP"
+
+  echo "▶️ 正在启动 macOS 芽说英语 App..."
+  open "$DEST_APP"
+  echo "✅ macOS 版本已成功安装到 $DEST_APP 并启动！"
+}
+
+case "$TARGET" in
+  android)
+    install_android
+    ;;
+  mac)
+    install_mac
+    ;;
+  all)
+    install_android || true
+    install_mac
+    ;;
+esac
+
+echo ""
+echo "🎉 全部操作已完成！"