diff --git a/main.py b/main.py
index 3374ddc..2764457 100644
--- a/main.py
+++ b/main.py
@@ -6,17 +6,19 @@ import webview
 
 version = "2024-10-10"
 
+config = {
+    "page": "init",
+    "branch": "slow",
+    "mirror": "tuna",
+}
 config_path = Path("launcher.json")
 
 try:
     with config_path.open("r") as f:
-        config = json.load(f)
+        user_config = json.load(f)
+        config.update(user_config)
 except Exception:
-    config = {
-        "page": "init",
-        "branch": "slow",
-    }
-
+    pass
 
 def custom_event(data):
     data = json.dumps({"log": data})
@@ -24,14 +26,21 @@ def custom_event(data):
     window.evaluate_js(js)
 
 
+mirror_list = {
+    "pypi": "https://pypi.org/simple",
+    "tuna": "https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple",
+    "sjtu": "https://mirror.sjtu.edu.cn/pypi/web/simple",
+}
+
+
 command_list = {
     "lfs": "git\\bin\\git lfs install",
     "ensurepip": "python\\python -m ensurepip --default-pip",
     "clone": "git\\bin\\git clone https://git.zhaozuohong.vip/mower-ng/mower-ng.git --branch slow",
-    "fetch": f"..\\git\\bin\\git fetch origin {config['branch']}",
-    "switch": f"..\\git\\bin\\git switch -f {config['branch']}",
-    "reset": f"..\\git\\bin\\git reset --hard origin/{config['branch']}",
-    "pip_install": "..\\python\\Scripts\\pip install --no-cache-dir -i https://mirror.sjtu.edu.cn/pypi/web/simple -r requirements.txt --no-warn-script-location",
+    "fetch": lambda: f"..\\git\\bin\\git fetch origin {config['branch']}",
+    "switch": lambda: f"..\\git\\bin\\git switch -f {config['branch']}",
+    "reset": lambda: f"..\\git\\bin\\git reset --hard origin/{config['branch']}",
+    "pip_install": lambda: f"..\\python\\Scripts\\pip install --no-cache-dir -i {mirror_list[config['mirror']]} -r requirements.txt --no-warn-script-location",
     "webview": "start ..\\python\\pythonw webview_ui.py",
     "manager": "start ..\\python\\pythonw manager.py",
 }
@@ -50,8 +59,16 @@ class Api:
     def set_page(self, page):
         config["page"] = page
 
+    def get_mirror(self):
+        return config["mirror"]
+
+    def set_mirror(self, mirror):
+        config["mirror"] = mirror
+
     def run(self, command, cwd=None):
         command = command_list[command]
+        if callable(command):
+            command = command()
         custom_event(command + "\n")
         with Popen(
             command,
diff --git a/ui/src/App.vue b/ui/src/App.vue
index 0d52415..fff8953 100644
--- a/ui/src/App.vue
+++ b/ui/src/App.vue
@@ -2,7 +2,7 @@
 import Init from '@/pages/Init.vue'
 import Launch from '@/pages/Launch.vue'
 import Update from '@/pages/Update.vue'
-import { darkTheme, dateZhCN, zhCN } from 'naive-ui'
+import { dateZhCN, zhCN } from 'naive-ui'
 
 const loading = ref(true)
 const page = ref(null)
@@ -58,12 +58,11 @@ provide('steps', steps)
         placement="left"
         class="container"
         :default-value="page"
-        @before-leave="!running"
         @update:value="set_page"
       >
-        <n-tab-pane name="init" tab="初始化"><init /></n-tab-pane>
-        <n-tab-pane name="update" tab="更新代码"><update /></n-tab-pane>
-        <n-tab-pane name="launch" tab="启动程序"><launch /></n-tab-pane>
+        <n-tab-pane :disabled="running" name="init" tab="初始化"><init /></n-tab-pane>
+        <n-tab-pane :disabled="running" name="update" tab="更新代码"><update /></n-tab-pane>
+        <n-tab-pane :disabled="running" name="launch" tab="启动程序"><launch /></n-tab-pane>
       </n-tabs>
     </n-notification-provider>
     <n-global-style />
diff --git a/ui/src/pages/Update.vue b/ui/src/pages/Update.vue
index 7492097..567b794 100644
--- a/ui/src/pages/Update.vue
+++ b/ui/src/pages/Update.vue
@@ -1,15 +1,22 @@
 <script setup>
 const branch = ref(null)
+const mirror = ref(null)
 
 onMounted(() => {
   pywebview.api.get_branch().then((value) => {
     branch.value = value
   })
+  pywebview.api.get_mirror().then((value) => {
+    mirror.value = value
+  })
 })
 
 watch(branch, () => {
   pywebview.api.set_branch(branch.value)
 })
+watch(mirror, () => {
+  pywebview.api.set_mirror(mirror.value)
+})
 
 const steps = computed(() => [
   {
@@ -32,15 +39,25 @@ provide('current_state', current_state)
 
 <template>
   <n-flex vertical style="gap: 16px; height: 100%; padding: 16px; box-sizing: border-box">
-    <n-flex>
-      <div>mower-ng 代码分支：</div>
-      <n-radio-group v-model:value="branch">
-        <n-flex>
-          <n-radio value="fast">fast</n-radio>
-          <n-radio value="slow">slow</n-radio>
-        </n-flex>
-      </n-radio-group>
-    </n-flex>
+    <n-form label-placement="left" :show-feedback="false" label-width="auto" label-align="left">
+      <n-form-item label="mower-ng 代码分支">
+        <n-radio-group v-model:value="branch">
+          <n-flex>
+            <n-radio value="fast">fast</n-radio>
+            <n-radio value="slow">slow</n-radio>
+          </n-flex>
+        </n-radio-group>
+      </n-form-item>
+      <n-form-item label="PyPI 仓库镜像">
+        <n-radio-group v-model:value="mirror">
+          <n-flex>
+            <n-radio value="pypi">PyPI</n-radio>
+            <n-radio value="sjtu">上海交通大学镜像站</n-radio>
+            <n-radio value="tuna">清华大学镜像站</n-radio>
+          </n-flex>
+        </n-radio-group>
+      </n-form-item>
+    </n-form>
     <n-steps :current="current_step" :status="current_state" size="small">
       <n-step v-for="step in steps" :title="step.title" />
     </n-steps>