diff --git a/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts b/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
index 228398fea7..1665c580de 100644
--- a/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
+++ b/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
@@ -46,6 +46,7 @@ import {
   EFFORT_RATIO,
   FileTypes,
   isSystemProvider,
+  isTranslateAssistant,
   MCPCallToolResponse,
   MCPTool,
   MCPToolResponse,
@@ -54,7 +55,6 @@ import {
   Provider,
   SystemProviderIds,
   ToolCallResponse,
-  TranslateAssistant,
   WebSearchSource
 } from '@renderer/types'
 import { ChunkType, TextStartChunk, ThinkingStartChunk } from '@renderer/types/chunk'
@@ -569,13 +569,18 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
         const extra_body: Record<string, any> = {}
 
         if (isQwenMTModel(model)) {
-          const targetLanguage = (assistant as TranslateAssistant).targetLanguage
-          extra_body.translation_options = {
-            source_lang: 'auto',
-            target_lang: mapLanguageToQwenMTModel(targetLanguage!)
-          }
-          if (!extra_body.translation_options.target_lang) {
-            throw new Error(t('translate.error.not_supported', { language: targetLanguage?.value }))
+          if (isTranslateAssistant(assistant)) {
+            const targetLanguage = assistant.targetLanguage
+            const translationOptions = {
+              source_lang: 'auto',
+              target_lang: mapLanguageToQwenMTModel(targetLanguage)
+            } as const
+            if (!translationOptions.target_lang) {
+              throw new Error(t('translate.error.not_supported', { language: targetLanguage.value }))
+            }
+            extra_body.translation_options = translationOptions
+          } else {
+            throw new Error(t('translate.error.chat_qwen_mt'))
           }
         }
 
diff --git a/src/renderer/src/i18n/locales/en-us.json b/src/renderer/src/i18n/locales/en-us.json
index 5a29fb31a2..385971a816 100644
--- a/src/renderer/src/i18n/locales/en-us.json
+++ b/src/renderer/src/i18n/locales/en-us.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "Translation content is empty",
     "error": {
+      "chat_qwen_mt": "Qwen MT model cannot be used in chat. Please go to the translation page.",
       "detect": {
         "qwen_mt": "QwenMT model cannot be used for language detection",
         "unknown": "Unknown language detected",
diff --git a/src/renderer/src/i18n/locales/ja-jp.json b/src/renderer/src/i18n/locales/ja-jp.json
index fa70851685..9ed6cfc726 100644
--- a/src/renderer/src/i18n/locales/ja-jp.json
+++ b/src/renderer/src/i18n/locales/ja-jp.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "翻訳内容が空です",
     "error": {
+      "chat_qwen_mt": "Qwen MT モデルは対話で使用できません。翻訳ページに移動してください",
       "detect": {
         "qwen_mt": "QwenMTモデルは言語検出に使用できません",
         "unknown": "検出された言語は不明です",
diff --git a/src/renderer/src/i18n/locales/ru-ru.json b/src/renderer/src/i18n/locales/ru-ru.json
index 6bb1df6e00..2c5328b2a9 100644
--- a/src/renderer/src/i18n/locales/ru-ru.json
+++ b/src/renderer/src/i18n/locales/ru-ru.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "Содержимое перевода пусто",
     "error": {
+      "chat_qwen_mt": "Модель Qwen MT недоступна для использования в диалоге, перейдите на страницу перевода",
       "detect": {
         "qwen_mt": "Модель QwenMT не может использоваться для определения языка",
         "unknown": "Обнаружен неизвестный язык",
diff --git a/src/renderer/src/i18n/locales/zh-cn.json b/src/renderer/src/i18n/locales/zh-cn.json
index 53ee849746..1f0aa33dd7 100644
--- a/src/renderer/src/i18n/locales/zh-cn.json
+++ b/src/renderer/src/i18n/locales/zh-cn.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "翻译内容为空",
     "error": {
+      "chat_qwen_mt": "Qwen MT 模型不可在对话中使用，请转至翻译页面",
       "detect": {
         "qwen_mt": "QwenMT模型不能用于语言检测",
         "unknown": "检测到未知语言",
diff --git a/src/renderer/src/i18n/locales/zh-tw.json b/src/renderer/src/i18n/locales/zh-tw.json
index 5414005224..3cbae8b2fb 100644
--- a/src/renderer/src/i18n/locales/zh-tw.json
+++ b/src/renderer/src/i18n/locales/zh-tw.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "翻譯內容為空",
     "error": {
+      "chat_qwen_mt": "Qwen MT 模型不可在对话中使用，請轉至翻譯頁面",
       "detect": {
         "qwen_mt": "QwenMT模型不能用於語言檢測",
         "unknown": "檢測到未知語言",
diff --git a/src/renderer/src/i18n/translate/el-gr.json b/src/renderer/src/i18n/translate/el-gr.json
index 673b449c6d..ff4e4d7331 100644
--- a/src/renderer/src/i18n/translate/el-gr.json
+++ b/src/renderer/src/i18n/translate/el-gr.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "Το μεταφρασμένο κείμενο είναι κενό",
     "error": {
+      "chat_qwen_mt": "Τα μοντέλα Qwen MT δεν είναι διαθέσιμα για χρήση σε διαλόγους, παρακαλώ μεταβείτε στη σελίδα μετάφρασης",
       "detect": {
         "qwen_mt": "Το μοντέλο QwenMT δεν μπορεί να χρησιμοποιηθεί για εντοπισμό γλώσσας",
         "unknown": "Ανιχνεύθηκε άγνωστη γλώσσα",
diff --git a/src/renderer/src/i18n/translate/es-es.json b/src/renderer/src/i18n/translate/es-es.json
index 3be80c67b0..6e0f92adf2 100644
--- a/src/renderer/src/i18n/translate/es-es.json
+++ b/src/renderer/src/i18n/translate/es-es.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "El contenido de traducción está vacío",
     "error": {
+      "chat_qwen_mt": "El modelo Qwen MT no está disponible para uso en conversaciones, por favor vaya a la página de traducción.",
       "detect": {
         "qwen_mt": "El modelo QwenMT no se puede utilizar para la detección de idiomas",
         "unknown": "Se detectó un idioma desconocido",
diff --git a/src/renderer/src/i18n/translate/fr-fr.json b/src/renderer/src/i18n/translate/fr-fr.json
index 2cf7b9938f..64969cb6cc 100644
--- a/src/renderer/src/i18n/translate/fr-fr.json
+++ b/src/renderer/src/i18n/translate/fr-fr.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "Le contenu à traduire est vide",
     "error": {
+      "chat_qwen_mt": "Les modèles Qwen MT ne peuvent pas être utilisés dans les conversations, veuillez vous rendre sur la page de traduction.",
       "detect": {
         "qwen_mt": "Le modèle QwenMT ne peut pas être utilisé pour la détection de langues",
         "unknown": "Langue inconnue détectée",
diff --git a/src/renderer/src/i18n/translate/pt-pt.json b/src/renderer/src/i18n/translate/pt-pt.json
index 4c0989ef7c..d4fbe979b2 100644
--- a/src/renderer/src/i18n/translate/pt-pt.json
+++ b/src/renderer/src/i18n/translate/pt-pt.json
@@ -3785,6 +3785,7 @@
     },
     "empty": "O conteúdo de tradução está vazio",
     "error": {
+      "chat_qwen_mt": "Modelos Qwen MT não estão disponíveis para uso em conversas. Por favor, vá para a página de tradução.",
       "detect": {
         "qwen_mt": "O modelo QwenMT não pode ser usado para detecção de idioma",
         "unknown": "Idioma desconhecido detectado",
diff --git a/src/renderer/src/services/AssistantService.ts b/src/renderer/src/services/AssistantService.ts
index f11dba8ec4..fe4c040d0d 100644
--- a/src/renderer/src/services/AssistantService.ts
+++ b/src/renderer/src/services/AssistantService.ts
@@ -6,6 +6,7 @@ import {
   MAX_CONTEXT_COUNT,
   UNLIMITED_CONTEXT_COUNT
 } from '@renderer/config/constant'
+import { isQwenMTModel } from '@renderer/config/models'
 import { UNKNOWN } from '@renderer/config/translate'
 import i18n from '@renderer/i18n'
 import store from '@renderer/store'
@@ -52,11 +53,10 @@ export function getDefaultAssistant(): Assistant {
 }
 
 export function getDefaultTranslateAssistant(targetLanguage: TranslateLanguage, text: string): TranslateAssistant {
-  const translateModel = getTranslateModel()
+  const model = getTranslateModel()
   const assistant: Assistant = getDefaultAssistant()
-  assistant.model = translateModel
 
-  if (!assistant.model) {
+  if (!model) {
     logger.error('No translate model')
     throw new Error(i18n.t('translate.error.not_configured'))
   }
@@ -66,15 +66,32 @@ export function getDefaultTranslateAssistant(targetLanguage: TranslateLanguage,
     throw new Error('Unknown target language')
   }
 
-  assistant.settings = {
+  const settings = {
     temperature: 0.7
   }
 
-  assistant.prompt = store
-    .getState()
-    .settings.translateModelPrompt.replaceAll('{{target_language}}', targetLanguage.value)
-    .replaceAll('{{text}}', text)
-  return { ...assistant, targetLanguage }
+  let prompt: string
+  let content: string
+  if (isQwenMTModel(model)) {
+    content = text
+    prompt = ''
+  } else {
+    content = 'follow system instruction'
+    prompt = store
+      .getState()
+      .settings.translateModelPrompt.replaceAll('{{target_language}}', targetLanguage.value)
+      .replaceAll('{{text}}', text)
+  }
+
+  const translateAssistant = {
+    ...assistant,
+    model,
+    settings,
+    prompt,
+    targetLanguage,
+    content
+  } satisfies TranslateAssistant
+  return translateAssistant
 }
 
 export function getDefaultAssistantSettings() {
diff --git a/src/renderer/src/services/TranslateService.ts b/src/renderer/src/services/TranslateService.ts
index 1b892bb326..5d09933d46 100644
--- a/src/renderer/src/services/TranslateService.ts
+++ b/src/renderer/src/services/TranslateService.ts
@@ -15,12 +15,7 @@ import { formatErrorMessage, isAbortError } from '@renderer/utils/error'
 import { t } from 'i18next'
 
 import { hasApiKey } from './ApiService'
-import {
-  getDefaultModel,
-  getDefaultTranslateAssistant,
-  getProviderByModel,
-  getTranslateModel
-} from './AssistantService'
+import { getDefaultTranslateAssistant, getProviderByModel } from './AssistantService'
 
 const logger = loggerService.withContext('TranslateService')
 interface FetchTranslateProps {
@@ -30,11 +25,7 @@ interface FetchTranslateProps {
 }
 
 async function fetchTranslate({ assistant, onResponse, abortKey }: FetchTranslateProps) {
-  const model = getTranslateModel() || assistant.model || getDefaultModel()
-
-  if (!model) {
-    throw new Error(t('translate.error.not_configured'))
-  }
+  const model = assistant.model
 
   const provider = getProviderByModel(model)
 
@@ -58,8 +49,8 @@ async function fetchTranslate({ assistant, onResponse, abortKey }: FetchTranslat
 
   const params: CompletionsParams = {
     callType: 'translate',
-    messages: 'do',
-    assistant: { ...assistant, model },
+    messages: assistant.content,
+    assistant,
     streamOutput: stream,
     enableReasoning,
     onResponse,
diff --git a/src/renderer/src/types/index.ts b/src/renderer/src/types/index.ts
index 515411edbb..0d0c1ef4bc 100644
--- a/src/renderer/src/types/index.ts
+++ b/src/renderer/src/types/index.ts
@@ -35,10 +35,19 @@ export type Assistant = {
   regularPhrases?: QuickPhrase[] // Added for regular phrase
   tags?: string[] // 助手标签
   enableMemory?: boolean
+  // for translate. 更好的做法是定义base assistant，把 Assistant 作为多种不同定义 assistant 的联合类型，但重构代价太大
+  content?: string
+  targetLanguage?: TranslateLanguage
 }
 
 export type TranslateAssistant = Assistant & {
-  targetLanguage?: TranslateLanguage
+  model: Model
+  content: string
+  targetLanguage: TranslateLanguage
+}
+
+export const isTranslateAssistant = (assistant: Assistant): assistant is TranslateAssistant => {
+  return (assistant.model && assistant.targetLanguage && typeof assistant.content === 'string') !== undefined
 }
 
 export type AssistantsSortType = 'tags' | 'list'