diff --git a/src/composables/useLlmProviderDirectory.ts b/src/composables/useLlmProviderDirectory.ts
index 3236d29e..43c8bb10 100644
--- a/src/composables/useLlmProviderDirectory.ts
+++ b/src/composables/useLlmProviderDirectory.ts
@@ -83,6 +83,7 @@ interface UseLlmProviderDirectoryOptions {
   apiKey: Ref<string>
   baseUrl: Ref<string>
   baseUrlPreset?: Ref<string>
+  useProxy?: Ref<boolean>
   userAgent?: Ref<string>
   model: Ref<string>
   maxContextTokens?: Ref<number>
@@ -254,6 +255,7 @@ export function useLlmProviderDirectory(options: UseLlmProviderDirectoryOptions)
           api_key: normalizeValue(options.apiKey.value) || undefined,
           base_url: normalizeValue(options.baseUrl.value) || undefined,
           base_url_preset: normalizeValue(options.baseUrlPreset?.value) || undefined,
+          use_proxy: options.useProxy?.value,
           user_agent: normalizeValue(options.userAgent?.value) || undefined,
           force_refresh: forceRefresh,
         },
diff --git a/src/composables/useSetupWizard.ts b/src/composables/useSetupWizard.ts
index 62e73481..9ac4a6b7 100644
--- a/src/composables/useSetupWizard.ts
+++ b/src/composables/useSetupWizard.ts
@@ -61,6 +61,7 @@ export interface WizardData {
     supportAudioOutput: boolean
     apiKey: string
     baseUrl: string
+    useProxy: boolean
     baseUrlPreset: string
     maxContextTokens: number
     userAgent: string
@@ -248,6 +249,7 @@ const wizardData = ref<WizardData>({
     supportAudioOutput: false,
     apiKey: '',
     baseUrl: 'https://api.deepseek.com',
+    useProxy: true,
     baseUrlPreset: '',
     maxContextTokens: 64,
     userAgent: '',
@@ -1446,6 +1448,7 @@ export function useSetupWizard() {
         LLM_SUPPORT_AUDIO_OUTPUT: wizardData.value.agent.supportAudioOutput,
         LLM_API_KEY: wizardData.value.agent.apiKey,
         LLM_BASE_URL: wizardData.value.agent.baseUrl || null,
+        LLM_USE_PROXY: wizardData.value.agent.useProxy,
         LLM_BASE_URL_PRESET: wizardData.value.agent.baseUrlPreset || null,
         LLM_MAX_CONTEXT_TOKENS: wizardData.value.agent.maxContextTokens,
         LLM_USER_AGENT: wizardData.value.agent.userAgent || null,
@@ -1560,6 +1563,7 @@ export function useSetupWizard() {
         wizardData.value.agent.supportAudioOutput = Boolean(result.data.LLM_SUPPORT_AUDIO_OUTPUT)
         wizardData.value.agent.apiKey = result.data.LLM_API_KEY || ''
         wizardData.value.agent.baseUrl = result.data.LLM_BASE_URL || ''
+        wizardData.value.agent.useProxy = result.data.LLM_USE_PROXY ?? true
         wizardData.value.agent.baseUrlPreset = result.data.LLM_BASE_URL_PRESET || ''
         wizardData.value.agent.maxContextTokens = result.data.LLM_MAX_CONTEXT_TOKENS || 64
         wizardData.value.agent.userAgent = result.data.LLM_USER_AGENT || ''
diff --git a/src/locales/en-US.ts b/src/locales/en-US.ts
index 2debbaa6..fef6e025 100644
--- a/src/locales/en-US.ts
+++ b/src/locales/en-US.ts
@@ -1456,6 +1456,9 @@ export default {
       llmApiKeyPlaceholder: 'Please enter API key',
       llmBaseUrl: 'LLM Base URL',
       llmBaseUrlHint: 'Base URL for LLM API, used for custom API endpoints',
+      llmUseProxy: 'Use System Proxy',
+      llmUseProxyHint:
+        'When enabled, Agent connections to the current LLM provider use the system proxy from advanced settings.',
       llmUserAgent: 'User-Agent',
       llmUserAgentHint: 'User-Agent sent to OpenAI-compatible APIs. Leave empty to use the SDK default.',
       llmProviderAuth: 'Provider Authorization',
diff --git a/src/locales/zh-CN.ts b/src/locales/zh-CN.ts
index a714d2ee..e5656215 100644
--- a/src/locales/zh-CN.ts
+++ b/src/locales/zh-CN.ts
@@ -1448,6 +1448,8 @@ export default {
       llmApiKeyPlaceholder: '请输入API密钥',
       llmBaseUrl: 'LLM基础URL',
       llmBaseUrlHint: 'LLM API的基础URL地址，用于自定义API端点',
+      llmUseProxy: '使用系统代理',
+      llmUseProxyHint: '启用后，Agent 连接当前 LLM 提供商时会应用高级设置中的系统代理',
       llmUserAgent: 'User-Agent',
       llmUserAgentHint: 'OpenAI 兼容接口请求使用的 User-Agent，留空则使用 SDK 默认值',
       llmProviderAuth: '提供商授权',
diff --git a/src/locales/zh-TW.ts b/src/locales/zh-TW.ts
index d26c42ea..0b17c914 100644
--- a/src/locales/zh-TW.ts
+++ b/src/locales/zh-TW.ts
@@ -1449,6 +1449,8 @@ export default {
       llmApiKeyPlaceholder: '請輸入API密鑰',
       llmBaseUrl: 'LLM基礎URL',
       llmBaseUrlHint: 'LLM API的基礎URL地址，用於自定義API端點',
+      llmUseProxy: '使用系統代理',
+      llmUseProxyHint: '啟用後，Agent 連接目前 LLM 提供商時會套用進階設定中的系統代理',
       llmUserAgent: 'User-Agent',
       llmUserAgentHint: 'OpenAI 兼容接口請求使用的 User-Agent，留空則使用 SDK 預設值',
       llmProviderAuth: '提供商授權',
diff --git a/src/views/setting/AccountSettingSystem.vue b/src/views/setting/AccountSettingSystem.vue
index 5a72c1fb..d662033e 100644
--- a/src/views/setting/AccountSettingSystem.vue
+++ b/src/views/setting/AccountSettingSystem.vue
@@ -57,6 +57,7 @@ const SystemSettings = ref<any>({
     LLM_SUPPORT_AUDIO_OUTPUT: false,
     LLM_API_KEY: null,
     LLM_BASE_URL: 'https://api.deepseek.com',
+    LLM_USE_PROXY: true,
     LLM_BASE_URL_PRESET: null,
     LLM_MAX_CONTEXT_TOKENS: 64,
     LLM_USER_AGENT: null,
@@ -214,6 +215,7 @@ type LlmSettingsSnapshot = {
   LLM_THINKING_LEVEL: string
   LLM_API_KEY: string
   LLM_BASE_URL: string
+  LLM_USE_PROXY: boolean
   LLM_BASE_URL_PRESET: string
   LLM_USER_AGENT: string
 }
@@ -249,6 +251,13 @@ const llmBaseUrlPresetRef = computed({
   },
 })
 
+const llmUseProxyRef = computed({
+  get: () => Boolean(SystemSettings.value.Basic.LLM_USE_PROXY),
+  set: value => {
+    SystemSettings.value.Basic.LLM_USE_PROXY = Boolean(value)
+  },
+})
+
 const llmUserAgentRef = computed({
   get: () => String(SystemSettings.value.Basic.LLM_USER_AGENT ?? ''),
   set: value => {
@@ -301,6 +310,7 @@ const {
   apiKey: llmApiKeyRef,
   baseUrl: llmBaseUrlRef,
   baseUrlPreset: llmBaseUrlPresetRef,
+  useProxy: llmUseProxyRef,
   userAgent: llmUserAgentRef,
   model: llmModelRef,
   maxContextTokens: llmMaxContextRef,
@@ -362,6 +372,7 @@ function buildLlmSnapshot(): LlmSettingsSnapshot {
     LLM_THINKING_LEVEL: String(SystemSettings.value.Basic.LLM_THINKING_LEVEL ?? 'off'),
     LLM_API_KEY: String(SystemSettings.value.Basic.LLM_API_KEY ?? ''),
     LLM_BASE_URL: String(SystemSettings.value.Basic.LLM_BASE_URL ?? ''),
+    LLM_USE_PROXY: Boolean(SystemSettings.value.Basic.LLM_USE_PROXY),
     LLM_BASE_URL_PRESET: String(SystemSettings.value.Basic.LLM_BASE_URL_PRESET ?? ''),
     LLM_USER_AGENT: String(SystemSettings.value.Basic.LLM_USER_AGENT ?? ''),
   }
@@ -379,6 +390,7 @@ function buildLlmTestPayload(snapshot: LlmSettingsSnapshot) {
     thinking_level: snapshot.LLM_THINKING_LEVEL.trim(),
     api_key: snapshot.LLM_API_KEY.trim(),
     base_url: snapshot.LLM_BASE_URL.trim(),
+    use_proxy: snapshot.LLM_USE_PROXY,
     base_url_preset: snapshot.LLM_BASE_URL_PRESET.trim(),
     user_agent: snapshot.LLM_USER_AGENT.trim(),
   }
@@ -1206,6 +1218,14 @@ watch(currentLlmSnapshotKey, (snapshotKey, previousSnapshotKey) => {
                         </template>
                       </VCombobox>
                     </VCol>
+                    <VCol v-if="SystemSettings.Basic.AI_AGENT_ENABLE && showBaseUrlField" cols="12">
+                      <VSwitch
+                        v-model="SystemSettings.Basic.LLM_USE_PROXY"
+                        :label="t('setting.system.llmUseProxy')"
+                        :hint="t('setting.system.llmUseProxyHint')"
+                        persistent-hint
+                      />
+                    </VCol>
                     <VCol v-if="SystemSettings.Basic.AI_AGENT_ENABLE && showApiKeyField" cols="12" md="6">
                       <VTextField
                         v-model="SystemSettings.Basic.LLM_API_KEY"
diff --git a/src/views/setup/AgentSettingsStep.vue b/src/views/setup/AgentSettingsStep.vue
index 8d35b2d8..7bf68028 100644
--- a/src/views/setup/AgentSettingsStep.vue
+++ b/src/views/setup/AgentSettingsStep.vue
@@ -40,6 +40,13 @@ const baseUrlPresetRef = computed({
   },
 })
 
+const useProxyRef = computed({
+  get: () => wizardData.value.agent.useProxy,
+  set: value => {
+    wizardData.value.agent.useProxy = Boolean(value)
+  },
+})
+
 const userAgentRef = computed({
   get: () => wizardData.value.agent.userAgent,
   set: value => {
@@ -99,6 +106,7 @@ const {
   apiKey: apiKeyRef,
   baseUrl: baseUrlRef,
   baseUrlPreset: baseUrlPresetRef,
+  useProxy: useProxyRef,
   userAgent: userAgentRef,
   model: modelRef,
   maxContextTokens: maxContextTokensRef,
@@ -341,6 +349,16 @@ onMounted(async () => {
             </VCombobox>
           </VCol>
 
+          <VCol v-if="showBaseUrlField" cols="12">
+            <VSwitch
+              v-model="wizardData.agent.useProxy"
+              :label="t('setting.system.llmUseProxy')"
+              :hint="t('setting.system.llmUseProxyHint')"
+              persistent-hint
+              color="primary"
+            />
+          </VCol>
+
           <VCol v-if="showApiKeyField" cols="12" md="6">
             <VTextField
               v-model="wizardData.agent.apiKey"