diff --git a/apps/web/src/api/assets/assets.ts b/apps/web/src/api/assets/assets.ts
index 902aface1..d54e52c54 100644
--- a/apps/web/src/api/assets/assets.ts
+++ b/apps/web/src/api/assets/assets.ts
@@ -49,6 +49,17 @@ export const getAssetsByKind = async (
   return response.data.items || []
 }
 
+/**
+ * 智能匹配素材（后端 AI 选素材）
+ * 调用后端 smart-match 端点，由后端根据素材库内容智能选择素材
+ */
+export const smartMatchAssets = async (libraryId: string): Promise<{ items: AssetItem[] }> => {
+  const response = await apiClient.post("/assets/smart-match", {
+    library_id: libraryId,
+  })
+  return response.data
+}
+
 /** 创建素材（上传文件后调用，附带 metadata） */
 export const createAsset = async (data: {
   library_id: string
diff --git a/apps/web/src/api/assets/index.ts b/apps/web/src/api/assets/index.ts
index a69db9a6c..22654854e 100644
--- a/apps/web/src/api/assets/index.ts
+++ b/apps/web/src/api/assets/index.ts
@@ -29,10 +29,11 @@ export {
   deleteAssetLibrary,
 } from "./libraries"
 
-// 素材 CRUD
+// 素材 CRUD + 智能匹配
 export {
   getAssets,
   getAssetsByKind,
+  smartMatchAssets,
   createAsset,
   updateAsset,
   updateAssetReviewStatus,
diff --git a/apps/web/src/pages/generate/components/Step2MaterialSelect.tsx b/apps/web/src/pages/generate/components/Step2MaterialSelect.tsx
index 905c38829..395916d42 100644
--- a/apps/web/src/pages/generate/components/Step2MaterialSelect.tsx
+++ b/apps/web/src/pages/generate/components/Step2MaterialSelect.tsx
@@ -65,8 +65,6 @@ const Step2MaterialSelect: React.FC<Step2MaterialSelectProps> = (props) => {
       {m.materialMode === "auto" && (
         <div className="xx-smart-match-section">
           <SmartMatchInput
-            inputValue={m.smartMatchInput}
-            onInputChange={m.setSmartMatchInput}
             matching={m.smartMatching}
             onMatch={m.handleSmartMatch}
             hasMatched={m.hasMatched}
@@ -76,7 +74,7 @@ const Step2MaterialSelect: React.FC<Step2MaterialSelectProps> = (props) => {
           />
 
           <SmartMatchResults
-            results={m.smartMatchedResults}
+            matchedAssets={m.smartMatchedResults}
             selectedIds={m.smartSelectedIds}
             matching={m.smartMatching}
             hasMatched={m.hasMatched}
diff --git a/apps/web/src/pages/generate/components/material/SmartMatchCard.tsx b/apps/web/src/pages/generate/components/material/SmartMatchCard.tsx
index 8a53916ac..b52346bab 100644
--- a/apps/web/src/pages/generate/components/material/SmartMatchCard.tsx
+++ b/apps/web/src/pages/generate/components/material/SmartMatchCard.tsx
@@ -1,30 +1,24 @@
 /**
- * 单个智能匹配卡片
+ * 智能匹配卡片（Q5 简化版）
+ * 只展示素材缩略图、名称、时长，无匹配分数
  */
 import React from "react"
 import { PlayCircleOutlined, CheckCircleFilled } from "@ant-design/icons"
 import type { AssetItem } from "@/api/assets"
 
-interface SmartMatchResultItem {
-  asset: AssetItem
-  matchScore: number
-  matchReason: string
-}
-
 interface SmartMatchCardProps {
-  result: SmartMatchResultItem
+  asset: AssetItem
   selected: boolean
   onClick: () => void
   formatDuration: (seconds: number) => string
 }
 
 const SmartMatchCard: React.FC<SmartMatchCardProps> = ({
-  result,
+  asset,
   selected,
   onClick,
   formatDuration,
 }) => {
-  const { asset, matchScore, matchReason } = result
   return (
     <div className={`xx-smart-match-card ${selected ? "selected" : ""}`} onClick={onClick}>
       {/* 缩略图 */}
@@ -36,7 +30,6 @@ const SmartMatchCard: React.FC<SmartMatchCardProps> = ({
             <PlayCircleOutlined style={{ fontSize: 32, opacity: 0.5 }} />
           </div>
         )}
-        <div className="xx-smart-match-score">{matchScore}%</div>
         {selected && (
           <div className="xx-smart-match-check">
             <CheckCircleFilled style={{ fontSize: 20, color: "#fff" }} />
@@ -46,12 +39,11 @@ const SmartMatchCard: React.FC<SmartMatchCardProps> = ({
           <div className="xx-smart-match-duration">{formatDuration(asset.duration)}</div>
         )}
       </div>
-      {/* 信息区 */}
+      {/* 名称 */}
       <div className="xx-smart-match-info">
         <div className="xx-smart-match-name" title={asset.name}>
           {asset.name}
         </div>
-        <div className="xx-smart-match-reason">🎯 {matchReason}</div>
       </div>
     </div>
   )
diff --git a/apps/web/src/pages/generate/components/material/SmartMatchInput.tsx b/apps/web/src/pages/generate/components/material/SmartMatchInput.tsx
index 4cb6be046..875d911a3 100644
--- a/apps/web/src/pages/generate/components/material/SmartMatchInput.tsx
+++ b/apps/web/src/pages/generate/components/material/SmartMatchInput.tsx
@@ -1,13 +1,11 @@
 /**
- * 智能匹配输入区
- * textarea + 提示 + 按钮组
+ * 智能匹配操作区（Q5 简化版）
+ * 一键触发 AI 选素材，无需输入描述
  */
 import React from "react"
-import { LoadingOutlined } from "@ant-design/icons"
+import { LoadingOutlined, ThunderboltOutlined } from "@ant-design/icons"
 
 interface SmartMatchInputProps {
-  inputValue: string
-  onInputChange: (value: string) => void
   matching: boolean
   onMatch: () => void
   hasMatched: boolean
@@ -17,8 +15,6 @@ interface SmartMatchInputProps {
 }
 
 const SmartMatchInput: React.FC<SmartMatchInputProps> = ({
-  inputValue,
-  onInputChange,
   matching,
   onMatch,
   hasMatched,
@@ -28,22 +24,9 @@ const SmartMatchInput: React.FC<SmartMatchInputProps> = ({
 }) => {
   return (
     <div className="xx-smart-match-input-area">
-      <label className="xx-smart-match-label">🤖 描述你想要的视频内容</label>
-      <textarea
-        className="xx-smart-match-input"
-        placeholder="例如：一个科技感十足的产品宣传视频，画面要有现代办公场景、团队协作、数据分析图表…"
-        value={inputValue}
-        onChange={(e) => onInputChange(e.target.value)}
-        rows={3}
-        onKeyDown={(e) => {
-          if (e.key === "Enter" && (e.ctrlKey || e.metaKey)) {
-            onMatch()
-          }
-        }}
-      />
-      <div className="xx-smart-match-input-footer">
+      <div className="xx-smart-match-action-row">
         <span className="xx-smart-match-tip">
-          {loading ? "扫描视频库中…" : `当前视频库共 ${materialsCount} 个素材可供匹配`}
+          {loading ? "扫描视频库中…" : `当前视频库共 ${materialsCount} 个素材`}
         </span>
         <div style={{ display: "flex", gap: 8 }}>
           {hasMatched && (
@@ -60,15 +43,18 @@ const SmartMatchInput: React.FC<SmartMatchInputProps> = ({
             type="button"
             className="xx-btn xx-btn-primary xx-btn-sm"
             onClick={onMatch}
-            disabled={matching || loading || !inputValue.trim()}
+            disabled={matching || loading}
           >
             {matching ? (
               <>
                 <LoadingOutlined style={{ marginRight: 6 }} />
-                匹配中…
+                AI 选择中…
               </>
             ) : (
-              "✨ 智能匹配"
+              <>
+                <ThunderboltOutlined style={{ marginRight: 6 }} />
+                {hasMatched ? "重新选择" : "让 AI 帮你选"}
+              </>
             )}
           </button>
         </div>
diff --git a/apps/web/src/pages/generate/components/material/SmartMatchResults.tsx b/apps/web/src/pages/generate/components/material/SmartMatchResults.tsx
index f4a3c911c..67d6c55b7 100644
--- a/apps/web/src/pages/generate/components/material/SmartMatchResults.tsx
+++ b/apps/web/src/pages/generate/components/material/SmartMatchResults.tsx
@@ -1,19 +1,14 @@
 /**
- * 智能匹配结果区（含加载/空状态/已选汇总）
+ * 智能匹配结果区（Q5 简化版）
+ * 直接展示 AI 选中的素材，无匹配分数和理由
  */
 import React from "react"
 import { LoadingOutlined } from "@ant-design/icons"
 import type { AssetItem } from "@/api/assets"
 import SmartMatchCard from "./SmartMatchCard"
 
-interface SmartMatchResultItem {
-  asset: AssetItem
-  matchScore: number
-  matchReason: string
-}
-
 interface SmartMatchResultsProps {
-  results: SmartMatchResultItem[]
+  matchedAssets: AssetItem[]
   selectedIds: string[]
   matching: boolean
   hasMatched: boolean
@@ -25,7 +20,7 @@ interface SmartMatchResultsProps {
 }
 
 const SmartMatchResults: React.FC<SmartMatchResultsProps> = ({
-  results,
+  matchedAssets,
   selectedIds,
   matching,
   hasMatched,
@@ -42,9 +37,9 @@ const SmartMatchResults: React.FC<SmartMatchResultsProps> = ({
         <LoadingOutlined
           style={{ fontSize: 32, color: "var(--primary-color)", marginBottom: 12 }}
         />
-        <div style={{ color: "var(--text-primary)", fontSize: 14 }}>AI 正在分析素材…</div>
+        <div style={{ color: "var(--text-primary)", fontSize: 14 }}>AI 正在为你选择素材…</div>
         <div style={{ color: "var(--text-tertiary)", fontSize: 12, marginTop: 4 }}>
-          正在根据描述从视频库中匹配最合适的素材
+          正在分析视频库，匹配最合适的素材
         </div>
       </div>
     )
@@ -56,20 +51,22 @@ const SmartMatchResults: React.FC<SmartMatchResultsProps> = ({
       <div className="xx-smart-match-empty">
         <div style={{ fontSize: 36, marginBottom: 8 }}>💡</div>
         <div style={{ color: "var(--text-secondary)", fontSize: 13 }}>
-          输入视频内容描述，点击「智能匹配」让 AI 帮你选素材
+          点击「让 AI 帮你选」，自动从视频库中选择最合适的素材
         </div>
       </div>
     )
   }
 
   // 无结果
-  if (results.length === 0) return null
+  if (matchedAssets.length === 0) return null
 
   return (
     <>
       <div className="xx-smart-match-results">
         <div className="xx-smart-match-results-header">
-          <span className="xx-smart-match-results-title">推荐素材 ({results.length}个)</span>
+          <span className="xx-smart-match-results-title">
+            AI 已选素材 ({matchedAssets.length}个)
+          </span>
           <div className="xx-smart-match-results-actions">
             <button type="button" className="xx-link-btn" onClick={onSelectAll}>
               全选
@@ -81,14 +78,14 @@ const SmartMatchResults: React.FC<SmartMatchResultsProps> = ({
           </div>
         </div>
         <div className="xx-smart-match-grid">
-          {results.map((result) => {
-            const isSelected = selectedIds.includes(result.asset.id)
+          {matchedAssets.map((asset) => {
+            const isSelected = selectedIds.includes(asset.id)
             return (
               <SmartMatchCard
-                key={result.asset.id}
-                result={result}
+                key={asset.id}
+                asset={asset}
                 selected={isSelected}
-                onClick={() => onToggle(result.asset.id)}
+                onClick={() => onToggle(asset.id)}
                 formatDuration={formatDuration}
               />
             )
diff --git a/apps/web/src/pages/generate/generate.css b/apps/web/src/pages/generate/generate.css
index e40db1c9a..27d8698fc 100644
--- a/apps/web/src/pages/generate/generate.css
+++ b/apps/web/src/pages/generate/generate.css
@@ -1433,47 +1433,20 @@
   border-radius: 14px;
 }
 
-.xx-smart-match-label {
-  display: block;
-  font-size: 14px;
-  font-weight: 600;
-  color: var(--text-primary, #1e293b);
-  margin-bottom: 10px;
-}
-
-.xx-smart-match-input {
-  width: 100%;
-  min-height: 80px;
-  padding: 12px;
-  font-size: 13px;
-  line-height: 1.6;
-  color: var(--text-primary, #1e293b);
-  background: #fff;
-  border: 1px solid var(--border-primary, #e2e8f0);
-  border-radius: 10px;
-  resize: vertical;
-  box-sizing: border-box;
-  transition: border-color 0.2s;
-  font-family: inherit;
-}
-
-.xx-smart-match-input:focus {
-  outline: none;
-  border-color: var(--primary-color, #4f46e5);
-  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
-}
-
-.xx-smart-match-input::placeholder {
-  color: var(--text-tertiary, #94a3b8);
-}
-
-.xx-smart-match-input-footer {
+.xx-smart-match-action-row {
   display: flex;
   justify-content: space-between;
   align-items: center;
-  margin-top: 10px;
 }
 
+/* textarea removed in Q5 */
+
+
+
+
+
+
+
 .xx-smart-match-tip {
   font-size: 12px;
   color: var(--text-tertiary, #94a3b8);
diff --git a/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts b/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts
index 98bb0840f..a3feb5f55 100755
--- a/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts
+++ b/apps/web/src/pages/generate/hooks/step2-materials/useSmartMatch.ts
@@ -1,75 +1,88 @@
 import { useState, useCallback, useMemo } from "react"
 import { message } from "antd"
 import type { AssetItem } from "@/api/assets"
-import { SMART_MATCH_REASONS } from "../../constants"
-
-interface SmartMatchedResult {
-  asset: AssetItem
-  matchScore: number
-  matchReason: string
-}
+import { smartMatchAssets } from "@/api/assets"
 
 interface UseSmartMatchOptions {
+  libraryId: string
   materials: { items: AssetItem[]; total: number }
   smartSelectedIds: string[]
   onSmartSelectedIdsChange: (ids: string[]) => void
 }
 
 /**
- * 智能素材匹配 Hook
- * 封装 AI 匹配、换一批、全选/清空等逻辑
+ * 智能素材匹配 Hook（Q5 简化版）
+ * 用户不手动选素材时，一键调用后端 AI 选素材
+ * 后端统一选素材逻辑后续完善，当前先走前端流程简化
  */
 export function useSmartMatch({
+  libraryId,
   materials,
   smartSelectedIds,
   onSmartSelectedIdsChange,
 }: UseSmartMatchOptions) {
-  const [smartMatchInput, setSmartMatchInput] = useState("")
   const [smartMatching, setSmartMatching] = useState(false)
-  const [smartMatchedResults, setSmartMatchedResults] = useState<SmartMatchedResult[]>([])
   const [hasMatched, setHasMatched] = useState(false)
+  const [smartMatchedResults, setSmartMatchedResults] = useState<AssetItem[]>([])
 
-  /* ── 智能素材匹配 ── */
+  /* ── 一键智能匹配 ── */
   const handleSmartMatch = useCallback(async () => {
-    if (!smartMatchInput.trim()) {
-      message.warning("请先输入视频内容描述")
+    if (!libraryId) {
+      message.warning("请先选择视频库")
       return
     }
+
     if (materials.items.length === 0) {
       message.warning("当前视频库暂无素材")
       return
     }
 
     setSmartMatching(true)
-    setHasMatched(true)
 
-    // 模拟 AI 匹配延迟
-    await new Promise((resolve) => setTimeout(resolve, 1500))
+    try {
+      // 调用后端智能匹配 API
+      const result = await smartMatchAssets(libraryId)
+      const matchedIds = result.items?.map((a: AssetItem) => a.id) ?? []
 
-    // 从素材库中随机选取 5-8 个作为推荐结果
-    const shuffled = [...materials.items].sort(() => Math.random() - 0.5)
-    const count = Math.min(shuffled.length, 5 + Math.floor(Math.random() * 4))
-    const picked = shuffled.slice(0, count)
+      if (matchedIds.length > 0) {
+        onSmartSelectedIdsChange(matchedIds)
+        // 保存 API 返回的完整素材列表
+        const resolved = result.items?.length
+          ? result.items
+          : materials.items.filter((a) => matchedIds.includes(a.id))
+        setSmartMatchedResults(resolved)
+        setHasMatched(true)
+        message.success(`AI 已为你选择 ${matchedIds.length} 个素材`)
+      } else {
+        // 后端返回空结果，回退到全选
+        onSmartSelectedIdsChange(materials.items.map((a) => a.id))
+        setSmartMatchedResults(materials.items)
+        setHasMatched(true)
+        message.info("AI 暂未找到匹配素材，已全选当前库素材")
+      }
+    } catch {
+      // 后端 API 尚未就绪时，回退到全选当前库素材
+      onSmartSelectedIdsChange(materials.items.map((a) => a.id))
+      setSmartMatchedResults(materials.items)
+      setHasMatched(true)
+      message.info("已为你全选当前库素材（智能匹配功能即将上线）")
+    } finally {
+      setSmartMatching(false)
+    }
+  }, [libraryId, materials.items, onSmartSelectedIdsChange])
 
-    const results = picked.map((asset, idx) => ({
-      asset,
-      matchScore: Math.round(85 + Math.random() * 14), // 85-99 分
-      matchReason:
-        SMART_MATCH_REASONS[idx % SMART_MATCH_REASONS.length] +
-        (Math.random() > 0.5 ? "，画面质感优秀" : ""),
-    }))
+  const handleRefreshMatch = useCallback(async () => {
+    // 换一批 = 重新触发智能匹配
+    await handleSmartMatch()
+  }, [handleSmartMatch])
 
-    // 按匹配度从高到低排序
-    results.sort((a, b) => b.matchScore - a.matchScore)
+  const handleSelectAllMatched = useCallback(() => {
+    onSmartSelectedIdsChange(materials.items.map((a) => a.id))
+  }, [materials.items, onSmartSelectedIdsChange])
 
-    setSmartMatchedResults(results)
-    // 默认选中匹配度 >= 90 的素材
-    const defaultSelected = results.filter((r) => r.matchScore >= 90).map((r) => r.asset.id)
-    onSmartSelectedIdsChange(
-      defaultSelected.length > 0 ? defaultSelected : results.slice(0, 3).map((r) => r.asset.id),
-    )
-    setSmartMatching(false)
-  }, [smartMatchInput, materials.items, onSmartSelectedIdsChange])
+  const handleClearSmartSelect = useCallback(() => {
+    onSmartSelectedIdsChange([])
+  }, [onSmartSelectedIdsChange])
 
   const handleToggleSmartSelect = useCallback(
     (assetId: string) => {
@@ -82,57 +95,20 @@ export function useSmartMatch({
     [smartSelectedIds, onSmartSelectedIdsChange],
   )
 
-  const handleRefreshMatch = useCallback(async () => {
-    if (materials.items.length <= 5) {
-      message.info("视频库素材较少，无法换一批")
-      return
-    }
-    setSmartMatching(true)
-    await new Promise((resolve) => setTimeout(resolve, 800))
-
-    const remaining = materials.items.filter(
-      (m) => !smartMatchedResults.some((r) => r.asset.id === m.id),
-    )
-    const shuffled = [...remaining].sort(() => Math.random() - 0.5)
-    const count = Math.min(shuffled.length, 5 + Math.floor(Math.random() * 3))
-    const picked = shuffled.slice(0, count)
-
-    const results = picked.map((asset, idx) => ({
-      asset,
-      matchScore: Math.round(80 + Math.random() * 19),
-      matchReason:
-        SMART_MATCH_REASONS[(idx + 2) % SMART_MATCH_REASONS.length] +
-        (Math.random() > 0.5 ? "，节奏明快" : ""),
-    }))
-    results.sort((a, b) => b.matchScore - a.matchScore)
-
-    setSmartMatchedResults(results)
-    onSmartSelectedIdsChange([])
-    setSmartMatching(false)
-  }, [materials.items, smartMatchedResults, onSmartSelectedIdsChange])
-
-  const handleSelectAllMatched = useCallback(() => {
-    onSmartSelectedIdsChange(smartMatchedResults.map((r) => r.asset.id))
-  }, [smartMatchedResults, onSmartSelectedIdsChange])
-
-  const handleClearSmartSelect = useCallback(() => {
-    onSmartSelectedIdsChange([])
-  }, [onSmartSelectedIdsChange])
-
-  /* ── 计算已选智能匹配素材的总时长 ── */
-  const smartSelectedTotalDuration = useMemo(() => {
-    return smartMatchedResults
-      .filter((r) => smartSelectedIds.includes(r.asset.id))
-      .reduce((sum, r) => sum + (r.asset.duration || 0), 0)
-  }, [smartMatchedResults, smartSelectedIds])
+  /* ── 计算已选素材总时长 ── */
+  const smartSelectedTotalDuration = useMemo(
+    () =>
+      materials.items
+        .filter((a) => smartSelectedIds.includes(a.id))
+        .reduce((sum, a) => sum + (a.duration || 0), 0),
+    [materials.items, smartSelectedIds],
+  )
 
   return {
-    smartMatchInput,
-    setSmartMatchInput,
     smartMatching,
-    smartMatchedResults,
     hasMatched,
     smartSelectedIds,
+    smartMatchedResults,
     handleSmartMatch,
     handleToggleSmartSelect,
     handleRefreshMatch,
diff --git a/apps/web/src/pages/generate/hooks/useStep2Materials.ts b/apps/web/src/pages/generate/hooks/useStep2Materials.ts
index 3a07d95ef..085825162 100755
--- a/apps/web/src/pages/generate/hooks/useStep2Materials.ts
+++ b/apps/web/src/pages/generate/hooks/useStep2Materials.ts
@@ -28,6 +28,7 @@ export function useStep2Materials({
     useMaterialLibrary()
 
   const smartMatch = useSmartMatch({
+    libraryId: selectedLibraryId,
     materials,
     smartSelectedIds,
     onSmartSelectedIdsChange,
@@ -58,13 +59,11 @@ export function useStep2Materials({
     // 手动选择
     selectedMaterials,
     handleToggleMaterial,
-    // 智能匹配
-    smartMatchInput: smartMatch.smartMatchInput,
-    setSmartMatchInput: smartMatch.setSmartMatchInput,
+    // 智能匹配（简化版）
     smartMatching: smartMatch.smartMatching,
-    smartMatchedResults: smartMatch.smartMatchedResults,
     hasMatched: smartMatch.hasMatched,
     smartSelectedIds: smartMatch.smartSelectedIds,
+    smartMatchedResults: smartMatch.smartMatchedResults,
     handleSmartMatch: smartMatch.handleSmartMatch,
     handleToggleSmartSelect: smartMatch.handleToggleSmartSelect,
     handleRefreshMatch: smartMatch.handleRefreshMatch,
diff --git a/apps/web/src/test/pages/GeneratePage.test.tsx b/apps/web/src/test/pages/GeneratePage.test.tsx
index 5d42bc06f..bb20a4988 100644
--- a/apps/web/src/test/pages/GeneratePage.test.tsx
+++ b/apps/web/src/test/pages/GeneratePage.test.tsx
@@ -179,6 +179,7 @@ vi.mock("@/api/assets", () => ({
   createAssetLibrary: vi.fn().mockResolvedValue({}),
   getAssets: vi.fn().mockResolvedValue({ items: [], total: 0 }),
   getAssetsByKind: vi.fn().mockResolvedValue({ items: [], total: 0 }),
+  smartMatchAssets: vi.fn().mockResolvedValue({ items: [] }),
   createAsset: vi.fn().mockResolvedValue({}),
   updateAsset: vi.fn().mockResolvedValue({}),
   deleteAsset: vi.fn().mockResolvedValue({}),