diff --git a/apps/web/src/api/generation/confirm.ts b/apps/web/src/api/generation/confirm.ts
new file mode 100755
index 000000000..e559e6e35
--- /dev/null
+++ b/apps/web/src/api/generation/confirm.ts
@@ -0,0 +1,14 @@
+import apiClient from "../client"
+import type { ConfirmGenerationRequest, ConfirmGenerationResponse } from "./types"
+
+/** 确认生成 — 基于预览任务创建正式生成任务 */
+export const confirmGeneration = async (
+  taskId: string,
+  params: ConfirmGenerationRequest,
+): Promise<ConfirmGenerationResponse> => {
+  const response = await apiClient.post<ConfirmGenerationResponse>(
+    `/tasks/${taskId}/confirm`,
+    params,
+  )
+  return response.data
+}
diff --git a/apps/web/src/api/generation/index.ts b/apps/web/src/api/generation/index.ts
old mode 100644
new mode 100755
index a3785acc7..672dc9699
--- a/apps/web/src/api/generation/index.ts
+++ b/apps/web/src/api/generation/index.ts
@@ -3,6 +3,10 @@ export type {
   CreatePreviewRequest,
   CreatePreviewResponse,
   PreviewTaskResponse,
+  ConfirmGenerationRequest,
+  ConfirmGenerationResponse,
+  ConfirmGenerationTaskItem,
 } from "./types"
 
 export { createPreview, getPreviewStatus } from "./preview"
+export { confirmGeneration } from "./confirm"
diff --git a/apps/web/src/api/generation/types.ts b/apps/web/src/api/generation/types.ts
old mode 100644
new mode 100755
index 502d19df0..2231f74cb
--- a/apps/web/src/api/generation/types.ts
+++ b/apps/web/src/api/generation/types.ts
@@ -45,3 +45,47 @@ export interface PreviewTaskResponse {
   finished_at?: string
   generate_duration?: number
 }
+
+/** 确认生成请求体 — 基于预览任务创建正式生成任务 */
+export interface ConfirmGenerationRequest {
+  /** 输出视频宽度，默认 1080 */
+  output_width?: number
+  /** 输出视频高度，默认 1920 */
+  output_height?: number
+  /** 自定义封面图片 URL */
+  cover_url?: string
+  /** 自定义视频标题 */
+  custom_title?: string
+}
+
+/** 确认生成响应 */
+export interface ConfirmGenerationResponse {
+  items: ConfirmGenerationTaskItem[]
+  total: number
+}
+
+/** 确认生成返回的任务项 */
+export interface ConfirmGenerationTaskItem {
+  id: string
+  project_id: string
+  asset_library_id: string
+  strategy_id: string
+  voice_library_id: string
+  template_id: string
+  asset_ids: string[]
+  title_ids: string[]
+  voice_ids: string[]
+  source_edit_plan_id: string
+  asset_select_mode: string
+  batch_id: string
+  is_preview: boolean
+  source_task_id: string
+  output_width: number
+  output_height: number
+  cover_url: string
+  custom_title: string
+  status: string
+  progress: number
+  result_count: number
+  error_message: string
+}
diff --git a/apps/web/src/pages/generate/hooks/generate-video/types.ts b/apps/web/src/pages/generate/hooks/generate-video/types.ts
old mode 100644
new mode 100755
index c9434c5a6..a09ab562f
--- a/apps/web/src/pages/generate/hooks/generate-video/types.ts
+++ b/apps/web/src/pages/generate/hooks/generate-video/types.ts
@@ -19,6 +19,8 @@ export interface UseGenerateVideoProps {
   autoSubtitles: boolean
   bgm: boolean
   generateCount: number
+  /** 预览任务的 task_id（用于新确认生成 API） */
+  previewTaskId?: string
 }
 
 /** 生成阶段 */
diff --git a/apps/web/src/pages/generate/hooks/useGenerateVideo.ts b/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
old mode 100644
new mode 100755
index d78fdaa17..b99f00b5b
--- a/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
+++ b/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
@@ -6,6 +6,7 @@ import { useState, useCallback } from "react"
 import { message } from "antd"
 import type { GeneratedVideo } from "@/api/template-editor"
 import { generateEditPlan, updateEditPlan, getEditPlan } from "@/api/template-editor"
+import { confirmGeneration } from "@/api/generation"
 import type { UseGenerateVideoProps } from "./generate-video/types"
 import { getGenerationPhase } from "./generate-video/phase"
 import { useGenerationPolling } from "./generate-video/useGenerationPolling"
@@ -55,6 +56,25 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
     clearTimer()
 
     try {
+      // 新流程：使用确认生成 API（基于预览任务）
+      if (props.previewTaskId) {
+        // 解析分辨率
+        const [widthStr, heightStr] = (props.videoRatio || "1080x1920").split("x")
+        const outputWidth = parseInt(widthStr, 10) || 1080
+        const outputHeight = parseInt(heightStr, 10) || 1920
+
+        await confirmGeneration(props.previewTaskId, {
+          output_width: outputWidth,
+          output_height: outputHeight,
+          cover_url: props.coverSettings.upload_url || "",
+          custom_title: props.titleSettings.title || "",
+        })
+
+        startPolling()
+        return
+      }
+
+      // 旧流程：使用 EditPlan API（向后兼容）
       const payload = buildEditPlanPayload(props)
 
       // 获取或创建草稿