diff --git a/apps/web/src/pages/generate/hooks/generate-video/buildPayload.ts b/apps/web/src/pages/generate/hooks/generate-video/buildPayload.ts
new file mode 100644
index 000000000..6040cf875
--- /dev/null
+++ b/apps/web/src/pages/generate/hooks/generate-video/buildPayload.ts
@@ -0,0 +1,76 @@
+import type { UseGenerateVideoProps } from "./types"
+import { buildVoiceConfig } from "./voiceConfig"
+
+/**
+ * 构建 updateEditPlan 的 payload
+ * 从 props 中提取需要的字段，组装成 API 所需的 config 结构
+ */
+export const buildEditPlanPayload = (props: UseGenerateVideoProps) => {
+  const {
+    titleSettings,
+    selectedMaterials,
+    materialMode,
+    smartSelectedIds,
+    voiceMode,
+    selectedVoice,
+    selectedClonedVoice,
+    coverSettings,
+    videoRatio,
+    style,
+    duration,
+    autoSubtitles,
+    bgm,
+    generateCount,
+  } = props
+
+  const voiceConfig = buildVoiceConfig({
+    voiceMode,
+    selectedVoice,
+    selectedClonedVoice,
+  })
+
+  return {
+    name: titleSettings.title.trim(),
+    config: {
+      asset_ids: materialMode === "auto" ? smartSelectedIds : selectedMaterials,
+      title_config: {
+        ai_auto_select: titleSettings.aiAutoSelect,
+        content: titleSettings.title,
+        position: titleSettings.position,
+        font_preset: titleSettings.font,
+        font_color: titleSettings.color,
+        font_size: titleSettings.size,
+      },
+      cover_config: coverSettings,
+      ...voiceConfig,
+      ratio: videoRatio,
+      style,
+      duration,
+      auto_subtitles: autoSubtitles,
+      bgm,
+      generate_count: generateCount,
+      material_mode: materialMode,
+    },
+    total_duration: duration,
+    status: "editing" as const,
+  }
+}
+
+/**
+ * 生成前置校验
+ * 返回错误信息，通过则返回 null
+ */
+export const validateGenerateInputs = (props: UseGenerateVideoProps): string | null => {
+  const { titleSettings, materialMode, selectedMaterials, voiceMode, selectedClonedVoice } = props
+
+  if (!titleSettings.title.trim()) {
+    return "请先选择或输入标题"
+  }
+  if (materialMode === "manual" && selectedMaterials.length === 0) {
+    return "请至少选择一个素材"
+  }
+  if (voiceMode === "clone" && !selectedClonedVoice) {
+    return "请先选择一个克隆音色"
+  }
+  return null
+}
diff --git a/apps/web/src/pages/generate/hooks/useGenerateVideo.ts b/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
index 1507d6e30..d78fdaa17 100644
--- a/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
+++ b/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
@@ -9,27 +9,11 @@ import { generateEditPlan, updateEditPlan, getEditPlan } from "@/api/template-ed
 import type { UseGenerateVideoProps } from "./generate-video/types"
 import { getGenerationPhase } from "./generate-video/phase"
 import { useGenerationPolling } from "./generate-video/useGenerationPolling"
-import { buildVoiceConfig } from "./generate-video/voiceConfig"
+import { buildEditPlanPayload, validateGenerateInputs } from "./generate-video/buildPayload"
 import { extractBackendError, translateError } from "./generate-video/errorUtils"
 
 export function useGenerateVideo(props: UseGenerateVideoProps) {
-  const {
-    titleSettings,
-    selectedTemplate,
-    selectedMaterials,
-    materialMode,
-    smartSelectedIds,
-    voiceMode,
-    selectedVoice,
-    selectedClonedVoice,
-    coverSettings,
-    videoRatio,
-    style,
-    duration,
-    autoSubtitles,
-    bgm,
-    generateCount,
-  } = props
+  const { selectedTemplate } = props
 
   /* ── 生成状态 ── */
   const [generating, setGenerating] = useState(false)
@@ -58,16 +42,9 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
 
   /* ── 生成视频 ── */
   const generate = useCallback(async () => {
-    if (!titleSettings.title.trim()) {
-      message.warning("请先选择或输入标题")
-      return
-    }
-    if (materialMode === "manual" && selectedMaterials.length === 0) {
-      message.warning("请至少选择一个素材")
-      return
-    }
-    if (voiceMode === "clone" && !selectedClonedVoice) {
-      message.warning("请先选择一个克隆音色")
+    const errorMsg = validateGenerateInputs(props)
+    if (errorMsg) {
+      message.warning(errorMsg)
       return
     }
 
@@ -78,41 +55,13 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
     clearTimer()
 
     try {
-      const voiceConfig = buildVoiceConfig({
-        voiceMode,
-        selectedVoice,
-        selectedClonedVoice,
-      })
+      const payload = buildEditPlanPayload(props)
 
       // 获取或创建草稿
       await getEditPlan(selectedTemplate)
 
       // 更新草稿内容 + 切换到 editing 状态
-      await updateEditPlan(selectedTemplate, {
-        name: titleSettings.title.trim(),
-        config: {
-          asset_ids: materialMode === "auto" ? smartSelectedIds : selectedMaterials,
-          title_config: {
-            ai_auto_select: titleSettings.aiAutoSelect,
-            content: titleSettings.title,
-            position: titleSettings.position,
-            font_preset: titleSettings.font,
-            font_color: titleSettings.color,
-            font_size: titleSettings.size,
-          },
-          cover_config: coverSettings,
-          ...voiceConfig,
-          ratio: videoRatio,
-          style,
-          duration,
-          auto_subtitles: autoSubtitles,
-          bgm,
-          generate_count: generateCount,
-          material_mode: materialMode,
-        },
-        total_duration: duration,
-        status: "editing",
-      })
+      await updateEditPlan(selectedTemplate, payload)
 
       await generateEditPlan(selectedTemplate)
       startPolling()
@@ -125,25 +74,7 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
       setGenerateError(finalMsg)
       message.error(finalMsg)
     }
-  }, [
-    titleSettings,
-    selectedMaterials,
-    selectedVoice,
-    voiceMode,
-    selectedClonedVoice,
-    videoRatio,
-    style,
-    duration,
-    autoSubtitles,
-    bgm,
-    selectedTemplate,
-    generateCount,
-    materialMode,
-    coverSettings,
-    smartSelectedIds,
-    clearTimer,
-    startPolling,
-  ])
+  }, [props, selectedTemplate, clearTimer, startPolling])
 
   /* 重新生成（失败后重试） */
   const retry = useCallback(() => {
diff --git a/apps/web/src/test/pages/generate/smoke.test.tsx b/apps/web/src/test/pages/generate/smoke.test.tsx
index 784ba7b0d..cbbe9d70a 100755
--- a/apps/web/src/test/pages/generate/smoke.test.tsx
+++ b/apps/web/src/test/pages/generate/smoke.test.tsx
@@ -42,3 +42,4 @@ import "@/pages/generate/hooks/generate-video/types"
 import "@/pages/generate/hooks/generate-video/phase"
 import "@/pages/generate/hooks/generate-video/voiceConfig"
 import "@/pages/generate/hooks/generate-video/errorUtils"
+import "@/pages/generate/hooks/generate-video/buildPayload"