diff --git a/src/main/services/remotefile/FileServiceManager.ts b/src/main/services/remotefile/FileServiceManager.ts
index 9cdf6f834c..f456ba285d 100644
--- a/src/main/services/remotefile/FileServiceManager.ts
+++ b/src/main/services/remotefile/FileServiceManager.ts
@@ -3,6 +3,7 @@ import { Provider } from '@types'
 import { BaseFileService } from './BaseFileService'
 import { GeminiService } from './GeminiService'
 import { MistralService } from './MistralService'
+import { OpenaiService } from './OpenAIService'
 
 export class FileServiceManager {
   private static instance: FileServiceManager
@@ -30,6 +31,9 @@ export class FileServiceManager {
         case 'mistral':
           service = new MistralService(provider)
           break
+        case 'openai':
+          service = new OpenaiService(provider)
+          break
         default:
           throw new Error(`Unsupported service type: ${type}`)
       }
diff --git a/src/main/services/remotefile/OpenAIService.ts b/src/main/services/remotefile/OpenAIService.ts
new file mode 100644
index 0000000000..b7f8d3ea39
--- /dev/null
+++ b/src/main/services/remotefile/OpenAIService.ts
@@ -0,0 +1,125 @@
+import { loggerService } from '@logger'
+import { fileStorage } from '@main/services/FileStorage'
+import { FileListResponse, FileMetadata, FileUploadResponse, Provider } from '@types'
+import * as fs from 'fs'
+import OpenAI from 'openai'
+
+import { CacheService } from '../CacheService'
+import { BaseFileService } from './BaseFileService'
+
+const logger = loggerService.withContext('OpenAIService')
+
+export class OpenaiService extends BaseFileService {
+  private static readonly FILE_CACHE_DURATION = 7 * 24 * 60 * 60 * 1000
+  private static readonly generateUIFileIdCacheKey = (fileId: string) => `ui_file_id_${fileId}`
+  private readonly client: OpenAI
+
+  constructor(provider: Provider) {
+    super(provider)
+    this.client = new OpenAI({
+      apiKey: provider.apiKey,
+      baseURL: provider.apiHost
+    })
+  }
+
+  async uploadFile(file: FileMetadata): Promise<FileUploadResponse> {
+    let fileReadStream: fs.ReadStream | undefined
+    try {
+      fileReadStream = fs.createReadStream(fileStorage.getFilePathById(file))
+      // 还原文件原始名，以提高模型对文件的理解
+      const fileStreamWithMeta = Object.assign(fileReadStream, {
+        name: file.origin_name
+      })
+      const response = await this.client.files.create({
+        file: fileStreamWithMeta,
+        purpose: file.purpose || 'assistants'
+      })
+      if (!response.id) {
+        throw new Error('File id not found in response')
+      }
+      // 映射RemoteFileId到UIFileId上
+      CacheService.set<string>(
+        OpenaiService.generateUIFileIdCacheKey(file.id),
+        response.id,
+        OpenaiService.FILE_CACHE_DURATION
+      )
+      return {
+        fileId: response.id,
+        displayName: file.origin_name,
+        status: 'success',
+        originalFile: {
+          type: 'openai',
+          file: response
+        }
+      }
+    } catch (error) {
+      logger.error('Error uploading file:', error as Error)
+      return {
+        fileId: '',
+        displayName: file.origin_name,
+        status: 'failed'
+      }
+    } finally {
+      // 销毁文件流
+      if (fileReadStream) fileReadStream.destroy()
+    }
+  }
+
+  async listFiles(): Promise<FileListResponse> {
+    try {
+      const response = await this.client.files.list()
+      return {
+        files: response.data.map((file) => ({
+          id: file.id,
+          displayName: file.filename || '',
+          size: file.bytes,
+          status: 'success', // All listed files are processed,
+          originalFile: {
+            type: 'openai',
+            file
+          }
+        }))
+      }
+    } catch (error) {
+      logger.error('Error listing files:', error as Error)
+      return { files: [] }
+    }
+  }
+
+  async deleteFile(fileId: string): Promise<void> {
+    try {
+      const cachedRemoteFileId = CacheService.get<string>(OpenaiService.generateUIFileIdCacheKey(fileId))
+      await this.client.files.delete(cachedRemoteFileId || fileId)
+      logger.debug(`File ${fileId} deleted`)
+    } catch (error) {
+      logger.error('Error deleting file:', error as Error)
+      throw error
+    }
+  }
+
+  async retrieveFile(fileId: string): Promise<FileUploadResponse> {
+    try {
+      // 尝试反映射RemoteFileId
+      const cachedRemoteFileId = CacheService.get<string>(OpenaiService.generateUIFileIdCacheKey(fileId))
+      const response = await this.client.files.retrieve(cachedRemoteFileId || fileId)
+
+      return {
+        fileId: response.id,
+        displayName: response.filename,
+        status: 'success',
+        originalFile: {
+          type: 'openai',
+          file: response
+        }
+      }
+    } catch (error) {
+      logger.error('Error retrieving file:', error as Error)
+      return {
+        fileId: fileId,
+        displayName: '',
+        status: 'failed',
+        originalFile: undefined
+      }
+    }
+  }
+}
diff --git a/src/renderer/src/aiCore/prepareParams/fileProcessor.ts b/src/renderer/src/aiCore/prepareParams/fileProcessor.ts
index 2defe2c711..9339e61a45 100644
--- a/src/renderer/src/aiCore/prepareParams/fileProcessor.ts
+++ b/src/renderer/src/aiCore/prepareParams/fileProcessor.ts
@@ -10,6 +10,7 @@ import { FileTypes } from '@renderer/types'
 import { FileMessageBlock } from '@renderer/types/newMessage'
 import { findFileBlocks } from '@renderer/utils/messageUtils/find'
 import type { FilePart, TextPart } from 'ai'
+import type OpenAI from 'openai'
 
 import { getAiSdkProviderId } from '../provider/factory'
 import { getFileSizeLimit, supportsImageInput, supportsLargeFileUpload, supportsPdfInput } from './modelCapabilities'
@@ -112,6 +113,86 @@ export async function handleGeminiFileUpload(file: FileMetadata, model: Model):
   return null
 }
 
+/**
+ * 处理OpenAI大文件上传
+ */
+export async function handleOpenAILargeFileUpload(
+  file: FileMetadata,
+  model: Model
+): Promise<(FilePart & { id?: string }) | null> {
+  const provider = getProviderByModel(model)
+  // 如果模型为qwen-long系列，文档中要求purpose需要为'file-extract'
+  if (['qwen-long', 'qwen-doc'].some((modelName) => model.name.includes(modelName))) {
+    file = {
+      ...file,
+      // 该类型并不在OpenAI定义中，但符合sdk规范，强制断言
+      purpose: 'file-extract' as OpenAI.FilePurpose
+    }
+  }
+  try {
+    // 检查文件是否已经上传过
+    const fileMetadata = await window.api.fileService.retrieve(provider, file.id)
+    if (fileMetadata.status === 'success' && fileMetadata.originalFile?.file) {
+      // 断言OpenAIFile对象
+      const remoteFile = fileMetadata.originalFile.file as OpenAI.Files.FileObject
+      // 判断用途是否一致
+      if (remoteFile.purpose !== file.purpose) {
+        logger.warn(`File ${file.origin_name} purpose mismatch: ${remoteFile.purpose} vs ${file.purpose}`)
+        throw new Error('File purpose mismatch')
+      }
+      return {
+        type: 'file',
+        filename: file.origin_name,
+        mediaType: '',
+        data: `fileid://${remoteFile.id}`
+      }
+    }
+  } catch (error) {
+    logger.error(`Failed to retrieve file ${file.origin_name}:`, error as Error)
+    return null
+  }
+  try {
+    // 如果文件未上传，执行上传
+    const uploadResult = await window.api.fileService.upload(provider, file)
+    if (uploadResult.originalFile?.file) {
+      // 断言OpenAIFile对象
+      const remoteFile = uploadResult.originalFile.file as OpenAI.Files.FileObject
+      logger.info(`File ${file.origin_name} uploaded.`)
+      return {
+        type: 'file',
+        filename: remoteFile.filename,
+        mediaType: '',
+        data: `fileid://${remoteFile.id}`
+      }
+    }
+  } catch (error) {
+    logger.error(`Failed to upload file ${file.origin_name}:`, error as Error)
+  }
+
+  return null
+}
+
+/**
+ * 大文件上传路由函数
+ */
+export async function handleLargeFileUpload(
+  file: FileMetadata,
+  model: Model
+): Promise<(FilePart & { id?: string }) | null> {
+  const provider = getProviderByModel(model)
+  const aiSdkId = getAiSdkProviderId(provider)
+
+  if (['google', 'google-generative-ai', 'google-vertex'].includes(aiSdkId)) {
+    return await handleGeminiFileUpload(file, model)
+  }
+
+  if (provider.type === 'openai') {
+    return await handleOpenAILargeFileUpload(file, model)
+  }
+
+  return null
+}
+
 /**
  * 将文件块转换为FilePart（用于原生文件支持）
  */
@@ -127,7 +208,7 @@ export async function convertFileBlockToFilePart(fileBlock: FileMessageBlock, mo
         // 如果支持大文件上传（如Gemini File API），尝试上传
         if (supportsLargeFileUpload(model)) {
           logger.info(`Large PDF file ${file.origin_name} (${file.size} bytes) attempting File API upload`)
-          const uploadResult = await handleGeminiFileUpload(file, model)
+          const uploadResult = await handleLargeFileUpload(file, model)
           if (uploadResult) {
             return uploadResult
           }
diff --git a/src/renderer/src/aiCore/prepareParams/messageConverter.ts b/src/renderer/src/aiCore/prepareParams/messageConverter.ts
index d11f25fc2c..4c2d5baba6 100644
--- a/src/renderer/src/aiCore/prepareParams/messageConverter.ts
+++ b/src/renderer/src/aiCore/prepareParams/messageConverter.ts
@@ -13,7 +13,15 @@ import {
   findThinkingBlocks,
   getMainTextContent
 } from '@renderer/utils/messageUtils/find'
-import type { AssistantModelMessage, FilePart, ImagePart, ModelMessage, TextPart, UserModelMessage } from 'ai'
+import type {
+  AssistantModelMessage,
+  FilePart,
+  ImagePart,
+  ModelMessage,
+  SystemModelMessage,
+  TextPart,
+  UserModelMessage
+} from 'ai'
 
 import { convertFileBlockToFilePart, convertFileBlockToTextPart } from './fileProcessor'
 
@@ -27,7 +35,7 @@ export async function convertMessageToSdkParam(
   message: Message,
   isVisionModel = false,
   model?: Model
-): Promise<ModelMessage> {
+): Promise<ModelMessage | ModelMessage[]> {
   const content = getMainTextContent(message)
   const fileBlocks = findFileBlocks(message)
   const imageBlocks = findImageBlocks(message)
@@ -48,7 +56,7 @@ async function convertMessageToUserModelMessage(
   imageBlocks: ImageMessageBlock[],
   isVisionModel = false,
   model?: Model
-): Promise<UserModelMessage> {
+): Promise<UserModelMessage | (UserModelMessage | SystemModelMessage)[]> {
   const parts: Array<TextPart | FilePart | ImagePart> = []
   if (content) {
     parts.push({ type: 'text', text: content })
@@ -85,6 +93,19 @@ async function convertMessageToUserModelMessage(
     if (model) {
       const filePart = await convertFileBlockToFilePart(fileBlock, model)
       if (filePart) {
+        // 判断filePart是否为string
+        if (typeof filePart.data === 'string' && filePart.data.startsWith('fileid://')) {
+          return [
+            {
+              role: 'system',
+              content: filePart.data
+            },
+            {
+              role: 'user',
+              content: parts.length > 0 ? parts : ''
+            }
+          ]
+        }
         parts.push(filePart)
         logger.debug(`File ${file.origin_name} processed as native file format`)
         processed = true
@@ -159,7 +180,7 @@ export async function convertMessagesToSdkMessages(messages: Message[], model: M
 
   for (const message of messages) {
     const sdkMessage = await convertMessageToSdkParam(message, isVision, model)
-    sdkMessages.push(sdkMessage)
+    sdkMessages.push(...(Array.isArray(sdkMessage) ? sdkMessage : [sdkMessage]))
   }
 
   return sdkMessages
diff --git a/src/renderer/src/aiCore/prepareParams/modelCapabilities.ts b/src/renderer/src/aiCore/prepareParams/modelCapabilities.ts
index a70576ff11..4a3c3f4bbf 100644
--- a/src/renderer/src/aiCore/prepareParams/modelCapabilities.ts
+++ b/src/renderer/src/aiCore/prepareParams/modelCapabilities.ts
@@ -10,26 +10,61 @@ import { FileTypes } from '@renderer/types'
 
 import { getAiSdkProviderId } from '../provider/factory'
 
+// 工具函数：基于模型名和提供商判断是否支持某特性
+function modelSupportValidator(
+  model: Model,
+  {
+    supportedModels = [],
+    unsupportedModels = [],
+    supportedProviders = [],
+    unsupportedProviders = []
+  }: {
+    supportedModels?: string[]
+    unsupportedModels?: string[]
+    supportedProviders?: string[]
+    unsupportedProviders?: string[]
+  }
+): boolean {
+  const provider = getProviderByModel(model)
+  const aiSdkId = getAiSdkProviderId(provider)
+
+  // 黑名单：命中不支持的模型直接拒绝
+  if (unsupportedModels.some((name) => model.name.includes(name))) {
+    return false
+  }
+
+  // 黑名单：命中不支持的提供商直接拒绝，常用于某些提供商的同名模型并不具备原模型的某些特性
+  if (unsupportedProviders.includes(aiSdkId)) {
+    return false
+  }
+
+  // 白名单：命中支持的模型名
+  if (supportedModels.some((name) => model.name.includes(name))) {
+    return true
+  }
+
+  // 回退到提供商判断
+  return supportedProviders.includes(aiSdkId)
+}
+
 /**
  * 检查模型是否支持原生PDF输入
  */
 export function supportsPdfInput(model: Model): boolean {
-  // 基于AI SDK文档，这些提供商支持PDF输入
-  const supportedProviders = [
-    'openai',
-    'azure-openai',
-    'anthropic',
-    'google',
-    'google-generative-ai',
-    'google-vertex',
-    'bedrock',
-    'amazon-bedrock'
-  ]
-
-  const provider = getProviderByModel(model)
-  const aiSdkId = getAiSdkProviderId(provider)
-
-  return supportedProviders.some((provider) => aiSdkId === provider)
+  // 基于AI SDK文档，以下模型或提供商支持PDF输入
+  return modelSupportValidator(model, {
+    supportedModels: ['qwen-long', 'qwen-doc'],
+    supportedProviders: [
+      'openai',
+      'azure-openai',
+      'anthropic',
+      'google',
+      'google-generative-ai',
+      'google-vertex',
+      'bedrock',
+      'amazon-bedrock'
+    ]
+  })
 }
 
 /**
@@ -43,11 +78,11 @@ export function supportsImageInput(model: Model): boolean {
  * 检查提供商是否支持大文件上传（如Gemini File API）
  */
 export function supportsLargeFileUpload(model: Model): boolean {
-  const provider = getProviderByModel(model)
-  const aiSdkId = getAiSdkProviderId(provider)
-
-  // 目前主要是Gemini系列支持大文件上传
-  return ['google', 'google-generative-ai', 'google-vertex'].includes(aiSdkId)
+  // 基于AI SDK文档，以下模型或提供商支持大文件上传
+  return modelSupportValidator(model, {
+    supportedModels: ['qwen-long', 'qwen-doc'],
+    supportedProviders: ['google', 'google-generative-ai', 'google-vertex']
+  })
 }
 
 /**
@@ -67,6 +102,11 @@ export function getFileSizeLimit(model: Model, fileType: FileTypes): number {
     return 20 * 1024 * 1024 // 20MB
   }
 
+  // Dashscope如果模型支持大文件上传优先使用File API上传
+  if (aiSdkId === 'dashscope' && supportsLargeFileUpload(model)) {
+    return 0 // 使用较小的默认值
+  }
+
   // 其他提供商没有明确限制，使用较大的默认值
   // 这与Legacy架构中的实现一致，让提供商自行处理文件大小
   return Infinity
diff --git a/src/renderer/src/types/file.ts b/src/renderer/src/types/file.ts
index 468f57a557..76d1c0df14 100644
--- a/src/renderer/src/types/file.ts
+++ b/src/renderer/src/types/file.ts
@@ -1,5 +1,6 @@
 import type { File } from '@google/genai'
 import type { FileSchema } from '@mistralai/mistralai/models/components'
+import type OpenAI from 'openai'
 
 export type RemoteFile =
   | {
@@ -10,13 +11,17 @@ export type RemoteFile =
       type: 'mistral'
       file: FileSchema
     }
+  | {
+      type: 'openai'
+      file: OpenAI.Files.FileObject
+    }
 
 /**
  * Type guard to check if a RemoteFile is a Gemini file
  * @param file - The RemoteFile to check
  * @returns True if the file is a Gemini file (file property is of type File)
  */
-export const isGeminiFile = (file: RemoteFile): file is RemoteFile & { type: 'gemini'; file: File } => {
+export const isGeminiFile = (file: RemoteFile): file is { type: 'gemini'; file: File } => {
   return file.type === 'gemini'
 }
 
@@ -25,10 +30,18 @@ export const isGeminiFile = (file: RemoteFile): file is RemoteFile & { type: 'ge
  * @param file - The RemoteFile to check
  * @returns True if the file is a Mistral file (file property is of type FileSchema)
  */
-export const isMistralFile = (file: RemoteFile): file is RemoteFile & { type: 'mistral'; file: FileSchema } => {
+export const isMistralFile = (file: RemoteFile): file is { type: 'mistral'; file: FileSchema } => {
   return file.type === 'mistral'
 }
 
+/** Type guard to check if a RemoteFile is an OpenAI file
+ * @param file - The RemoteFile to check
+ * @returns True if the file is an OpenAI file (file property is of type OpenAI.Files.FileObject)
+ */
+export const isOpenAIFile = (file: RemoteFile): file is { type: 'openai'; file: OpenAI.Files.FileObject } => {
+  return file.type === 'openai'
+}
+
 export type FileStatus = 'success' | 'processing' | 'failed' | 'unknown'
 
 export interface FileUploadResponse {
@@ -93,6 +106,10 @@ export interface FileMetadata {
    * 该文件预计的token大小 (可选)
    */
   tokens?: number
+  /**
+   * 该文件的用途
+   */
+  purpose?: OpenAI.FilePurpose
 }
 
 export interface FileType extends FileMetadata {}