diff --git a/src-tauri/locales/en.json b/src-tauri/locales/en.json
index 2424a99..c59e6f6 100644
--- a/src-tauri/locales/en.json
+++ b/src-tauri/locales/en.json
@@ -769,6 +769,7 @@
     "no_proxy": "No Proxy",
     "proxy_host": "Proxy Host",
     "proxy_host_placeholder": "e.g. 127.0.0.1",
+    "proxy_host_invalid": "Invalid hostname format. Please enter a valid IP address or domain name",
     "proxy_port": "Proxy Port",
     "proxy_port_placeholder": "e.g. 7890",
     "proxy_username": "Proxy Username",
diff --git a/src-tauri/locales/zh-cn.json b/src-tauri/locales/zh-cn.json
index d74e67a..a939579 100644
--- a/src-tauri/locales/zh-cn.json
+++ b/src-tauri/locales/zh-cn.json
@@ -782,6 +782,7 @@
     "no_proxy": "不使用代理",
     "proxy_host": "代理主机",
     "proxy_host_placeholder": "例如：127.0.0.1",
+    "proxy_host_invalid": "主机名格式无效，请输入有效的IP地址或域名",
     "proxy_port": "代理端口",
     "proxy_port_placeholder": "例如：7890",
     "proxy_username": "代理用户名",
diff --git a/src-tauri/locales/zh-hant.json b/src-tauri/locales/zh-hant.json
index 55915e6..8d22fec 100644
--- a/src-tauri/locales/zh-hant.json
+++ b/src-tauri/locales/zh-hant.json
@@ -736,6 +736,7 @@
     "no_proxy": "不使用代理",
     "proxy_host": "代理主機",
     "proxy_host_placeholder": "例如：127.0.0.1",
+    "proxy_host_invalid": "主機名格式無效，請輸入有效的IP地址或域名",
     "proxy_port": "代理端口",
     "proxy_port_placeholder": "例如：7890",
     "proxy_username": "代理用戶名",
diff --git a/src/controller/storage/mount/mount.ts b/src/controller/storage/mount/mount.ts
index 76928f6..664caf4 100644
--- a/src/controller/storage/mount/mount.ts
+++ b/src/controller/storage/mount/mount.ts
@@ -56,10 +56,11 @@ function getMountStorage(mountPath: string): MountListItem | undefined {
 }
 
 /**
- * 检查是否已挂载
+ * 检查挂载配置是否存在（同步版本，仅检查配置，不检查实际挂载状态）
+ * 注意：此函数检查的是配置是否存在，而非实际的rclone挂载状态
+ * 如需检查实际挂载状态，请使用 mountRepository.isMounted()（异步版本）
  */
 function isMounted(mountPath: string): boolean {
-  // 同步版本，用于 UI 判断
   const mountList = mountRepository.getMountConfig(mountPath)
   return mountList !== undefined
 }
diff --git a/src/page/setting/components/AdvancedSettings.tsx b/src/page/setting/components/AdvancedSettings.tsx
index 0c7f7ce..e8ddf96 100644
--- a/src/page/setting/components/AdvancedSettings.tsx
+++ b/src/page/setting/components/AdvancedSettings.tsx
@@ -11,6 +11,16 @@ import { clearAllCache } from '../../../utils/tempCleanup'
 
 const FormItem = Form.Item
 
+/**
+ * 验证主机名格式（允许IP地址、域名、localhost）
+ */
+function isValidHostname(hostname: string): boolean {
+  if (!hostname) return false
+  // 允许: IP地址、域名、localhost
+  const hostnameRegex = /^[a-zA-Z0-9]([a-zA-Z0-9\-\.]*[a-zA-Z0-9])?$/
+  return hostnameRegex.test(hostname)
+}
+
 export function AdvancedSettings(): JSX.Element {
   const { t } = useTranslation()
   const { increment: incrementSettings } = useSettingsStore()
@@ -59,6 +69,12 @@ export function AdvancedSettings(): JSX.Element {
                       incrementSettings()
                     }
                   }}
+                  onBlur={e => {
+                    const value = e.target.value
+                    if (value && !isValidHostname(value)) {
+                      Message.warning(t('proxy_host_invalid'))
+                    }
+                  }}
                 />
               </FormItem>
               <FormItem label={t('proxy_port')}>
diff --git a/src/services/ConfigService.ts b/src/services/ConfigService.ts
index c852e11..33b716a 100644
--- a/src/services/ConfigService.ts
+++ b/src/services/ConfigService.ts
@@ -164,6 +164,10 @@ class ConfigService {
       if (this.config.framework?.openlist?.password) {
         this.config.framework.openlist.password = decodePassword(this.config.framework.openlist.password)
       }
+      // 解码代理密码
+      if (this.config.settings?.proxy?.password) {
+        this.config.settings.proxy.password = decodePassword(this.config.settings.proxy.password)
+      }
       
       logger.info('Config loaded from disk', 'ConfigService')
     } catch (error) {
@@ -185,6 +189,10 @@ class ConfigService {
       if (configToSave.framework?.openlist?.password) {
         configToSave.framework.openlist.password = encodePassword(configToSave.framework.openlist.password)
       }
+      // 编码代理密码
+      if (configToSave.settings?.proxy?.password) {
+        configToSave.settings.proxy.password = encodePassword(configToSave.settings.proxy.password)
+      }
       
       await invoke('update_config', {
         data: configToSave,
diff --git a/src/utils/rclone/process.ts b/src/utils/rclone/process.ts
index 5e7738c..3940bd0 100644
--- a/src/utils/rclone/process.ts
+++ b/src/utils/rclone/process.ts
@@ -11,13 +11,14 @@ import { LOCALHOST_URLS } from '../../constants'
 import { netmountLogDir, rcloneConfigFile, rcloneLogFile } from '../netmountPaths'
 import { restartSidecar, startSidecarAndWait, stopSidecarGracefully } from '../sidecarService'
 import { parseExtraCliArgs } from '../cliArgs'
+import type { NMConfig } from '../../type/config'
 
 /**
  * 构建代理URL
  * 根据代理配置生成 rclone --http-proxy 参数值
  * 支持 HTTP 和 SOCKS5 代理，格式：protocol://[user:pass@]host:port
  */
-function buildProxyUrl(proxy: { type: string; host?: string; port?: number; username?: string; password?: string }): string | undefined {
+function buildProxyUrl(proxy: NonNullable<NMConfig['settings']['proxy']>): string | undefined {
   if (proxy.type === 'no_proxy' || !proxy.host || !proxy.port) {
     return undefined
   }