diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a6a8d20..bc43b2a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -70,6 +70,42 @@ jobs:
           TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
           TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
 
+      - name: Add README to DMG
+        run: |
+          DMG_PATH=$(ls tauri-app/src-tauri/target/universal-apple-darwin/release/bundle/dmg/*.dmg | head -1)
+          DMG_RW="/tmp/temp_rw.dmg"
+          MOUNT_POINT="/tmp/dmg_mount"
+
+          # 转换为可读写格式
+          hdiutil convert "$DMG_PATH" -format UDRW -o "$DMG_RW"
+
+          # 挂载可读写 DMG
+          mkdir -p "$MOUNT_POINT"
+          hdiutil attach "$DMG_RW" -mountpoint "$MOUNT_POINT" -nobrowse
+
+          # 复制 README.txt 到 DMG 根目录
+          cp tauri-app/src-tauri/README.txt "$MOUNT_POINT/"
+
+          # 卸载
+          hdiutil detach "$MOUNT_POINT"
+
+          # 删除原 DMG，转换回压缩只读格式
+          rm -f "$DMG_PATH"
+          hdiutil convert "$DMG_RW" -format UDZO -o "$DMG_PATH"
+
+          # 清理临时文件
+          rm -f "$DMG_RW"
+
+      - name: Re-sign DMG
+        working-directory: tauri-app
+        run: |
+          DMG_PATH=$(ls src-tauri/target/universal-apple-darwin/release/bundle/dmg/*.dmg | head -1)
+          rm -f "${DMG_PATH}.sig"
+          npx tauri signer sign -k "$TAURI_SIGNING_PRIVATE_KEY" -p "$TAURI_SIGNING_PRIVATE_KEY_PASSWORD" "$DMG_PATH"
+        env:
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
diff --git a/tauri-app/src-tauri/README.txt b/tauri-app/src-tauri/README.txt
new file mode 100644
index 0000000..781d54e
--- /dev/null
+++ b/tauri-app/src-tauri/README.txt
@@ -0,0 +1,9 @@
+美家卡智影 - 首次打开指南
+
+首次打开如遇打开失败，请按以下步骤操作：
+
+方法 1：
+在应用图标上右键（或按住 Control 点击），选择"打开"，然后在弹出的对话框中再次点击"打开"。
+
+方法 2：
+前往 系统设置 → 隐私与安全性，在"安全性"板块找到被拦截的应用记录，点击"仍要打开"按钮。
diff --git a/tauri-app/src-tauri/dmg-background-darkAqua.tiff b/tauri-app/src-tauri/dmg-background-darkAqua.tiff
deleted file mode 100644
index 104f4ea..0000000
Binary files a/tauri-app/src-tauri/dmg-background-darkAqua.tiff and /dev/null differ
diff --git a/tauri-app/src-tauri/dmg-background.png b/tauri-app/src-tauri/dmg-background.png
deleted file mode 100644
index 76fa7a9..0000000
Binary files a/tauri-app/src-tauri/dmg-background.png and /dev/null differ
diff --git a/tauri-app/src-tauri/dmg-background.tiff b/tauri-app/src-tauri/dmg-background.tiff
deleted file mode 100644
index 0e8c976..0000000
Binary files a/tauri-app/src-tauri/dmg-background.tiff and /dev/null differ
diff --git a/tauri-app/src-tauri/tauri.conf.json b/tauri-app/src-tauri/tauri.conf.json
index af2719c..0581c38 100644
--- a/tauri-app/src-tauri/tauri.conf.json
+++ b/tauri-app/src-tauri/tauri.conf.json
@@ -72,7 +72,6 @@
       "minimumSystemVersion": "13.0",
       "infoPlist": "Info.plist",
       "dmg": {
-        "background": "dmg-background.tiff",
         "windowSize": {
           "width": 660,
           "height": 400