diff --git a/apps/api/app/api/routes/templates_editor/clips.py b/apps/api/app/api/routes/templates_editor/clips.py
index 44dcdd16e..8189f29eb 100755
--- a/apps/api/app/api/routes/templates_editor/clips.py
+++ b/apps/api/app/api/routes/templates_editor/clips.py
@@ -44,6 +44,7 @@ from packages.adapters.sqlalchemy_impl.template_repository import (
     SQLAlchemyTemplateRepository,
 )
 from packages.domain.plan_generator_utils import _calc_random_start_time
+from packages.domain.smart_match import score_asset
 from packages.shared.mediakit_client import get_mediakit_client
 
 from .dependencies import get_draft_plan_id, get_editor_services
@@ -667,10 +668,14 @@ def create_clips_from_assets_editor(
     # 2. 获取素材实际时长（去重查询）
     unique_asset_ids = list(dict.fromkeys(asset_ids))
     asset_durations: dict[str, float] = {}
+    asset_smart_scores: dict[str, float] = {}
     for asset_id in unique_asset_ids:
         asset = asset_repo.get(asset_id)
         if asset and hasattr(asset, "duration"):
             asset_durations[asset_id] = float(asset.duration or 0.0)
+            # 计算 smart_match 综合评分，用于候选排序
+            smart_score, _ = score_asset(asset)
+            asset_smart_scores[asset_id] = smart_score
 
     # 3. 在内存中计算所有片段数据（使用随机起始时间，不调用MediaKit）
     # 读取素材 metadata 中持久化的历史已用区间（跨任务/跨调用去重），
@@ -725,7 +730,11 @@ def create_clips_from_assets_editor(
         }
         sorted_candidates = sorted(
             asset_ids,
-            key=lambda aid: (asset_use_counts.get(aid, 0), random.random()),
+            key=lambda aid: (
+                -asset_smart_scores.get(aid, 0.0),
+                asset_use_counts.get(aid, 0),
+                random.random(),
+            ),
         )
         for candidate in sorted_candidates:
             candidate_total = asset_durations.get(candidate, 0.0)
diff --git a/apps/api/app/services/plan_generator_service.py b/apps/api/app/services/plan_generator_service.py
index 12b1c0015..f000493dd 100755
--- a/apps/api/app/services/plan_generator_service.py
+++ b/apps/api/app/services/plan_generator_service.py
@@ -32,6 +32,7 @@ from packages.domain.plan_generator_utils import (
     generate_default_clips,
     map_clip_types_for_mode,
 )
+from packages.domain.smart_match import score_asset
 from packages.domain.template_clip_config import TemplateClipConfig
 
 logger = logging.getLogger(__name__)
@@ -218,8 +219,13 @@ class PlanGeneratorService:
     ) -> None:
         """按 editing_mode 将素材分配到 clips（就地修改，未持久化）.
 
-        委托给 plan_generator_utils.distribute_assets 纯函数。
+        先用 smart_match 评分对素材排序（高分优先），再委托给
+        plan_generator_utils.distribute_assets 纯函数完成分配。
         """
+        # 用 smart_match 评分排序素材：高分（质量好/时长合适/新鲜/未使用）优先
+        if self._asset_repo and not random_selection:
+            asset_ids = self._sort_assets_by_smart_score(asset_ids)
+
         distribute_assets(
             clips,
             asset_ids,
@@ -228,6 +234,23 @@ class PlanGeneratorService:
             asset_durations=asset_durations,
         )
 
+    def _sort_assets_by_smart_score(self, asset_ids: List[str]) -> List[str]:
+        """按 smart_match 综合评分降序排列素材 ID。
+
+        评分高的素材（质量好、时长合适、新鲜、使用次数少）排在前面。
+        """
+        scored: list[tuple[str, float]] = []
+        for asset_id in asset_ids:
+            asset = self._asset_repo.get(asset_id)
+            if asset:
+                score, _ = score_asset(asset)
+                scored.append((asset_id, score))
+            else:
+                scored.append((asset_id, 0.0))
+        # 按评分降序排列
+        scored.sort(key=lambda x: x[1], reverse=True)
+        return [aid for aid, _ in scored]
+
     def _fetch_asset_durations(self, asset_ids: List[str]) -> dict[str, float]:
         """从数据库获取素材时长信息.
 
diff --git a/tests/unit/test_editor_clips_random_start.py b/tests/unit/test_editor_clips_random_start.py
index d3fb9a1ee..cae16fcf6 100644
--- a/tests/unit/test_editor_clips_random_start.py
+++ b/tests/unit/test_editor_clips_random_start.py
@@ -58,6 +58,10 @@ def _make_mock_asset(asset_id, duration):
     asset = MagicMock()
     asset.id = asset_id
     asset.duration = duration
+    # score_asset 所需的属性（避免 MagicMock 导致类型比较错误）
+    asset.quality_score = None
+    asset.created_at = None
+    asset.metadata = {}
     return asset
 
 
diff --git a/tests/unit/test_mediakit_smart_clips.py b/tests/unit/test_mediakit_smart_clips.py
index edf3d18a6..5178fe36d 100644
--- a/tests/unit/test_mediakit_smart_clips.py
+++ b/tests/unit/test_mediakit_smart_clips.py
@@ -347,6 +347,10 @@ def _make_rich_asset(asset_id, duration, storage_key="v.mp4", mime="video/mp4"):
     asset.duration = duration
     asset.storage_key = storage_key
     asset.mime_type = mime
+    # score_asset 所需的属性（避免 MagicMock 导致类型比较错误）
+    asset.quality_score = None
+    asset.created_at = None
+    asset.metadata = {}
     return asset
 
 
diff --git a/tests/unit/test_plan_generator.py b/tests/unit/test_plan_generator.py
index 10d02f62c..37544c067 100755
--- a/tests/unit/test_plan_generator.py
+++ b/tests/unit/test_plan_generator.py
@@ -908,6 +908,10 @@ class TestAssetDurationsAlwaysFetched:
         def fake_get(asset_id):
             mock_asset = MagicMock()
             mock_asset.duration = 30.0  # 每个素材 30 秒
+            # score_asset 所需的属性
+            mock_asset.quality_score = None
+            mock_asset.created_at = None
+            mock_asset.metadata = {}
             return mock_asset
 
         asset_repo.get = MagicMock(side_effect=fake_get)
diff --git a/tests/unit/test_smart_match_integration.py b/tests/unit/test_smart_match_integration.py
new file mode 100644
index 000000000..6ef23efad
--- /dev/null
+++ b/tests/unit/test_smart_match_integration.py
@@ -0,0 +1,324 @@
+"""测试 smart_match 评分集成到素材选取路径。
+
+验证：
+- 使用次数多的素材评分低于使用次数少的（unused 维度降权生效）
+- from-assets 路径中 sorted_candidates 按 smart_match 评分排序
+- 一键生成路径中 _sort_assets_by_smart_score 按评分降序
+"""
+
+from __future__ import annotations
+
+import os
+import sys
+from dataclasses import dataclass, field
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any
+from unittest.mock import MagicMock, patch
+
+os.environ.setdefault("JWT_SECRET_KEY", "unit-test-secret-key-for-testing")
+os.environ.setdefault("DATABASE_URL", "sqlite:///test.db")
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "apps" / "api"))
+
+import pytest
+
+from packages.domain.smart_match import score_asset, smart_select_assets
+
+# ── 辅助工厂 ──────────────────────────────────────────────────────────────────
+
+
+@dataclass
+class FakeAsset:
+    """Minimal Asset-like object."""
+
+    id: str
+    quality_score: float | None = 70.0
+    duration: float = 15.0
+    created_at: datetime | None = None
+    metadata: dict[str, Any] = field(default_factory=dict)
+    status: str = "ready"
+    file_type: str = "video"
+
+
+def _asset_with_use_count(asset_id: str, use_count: int) -> FakeAsset:
+    """创建指定使用次数的素材，其他维度保持一致。"""
+    return FakeAsset(
+        id=asset_id,
+        quality_score=70.0,
+        duration=15.0,  # 最优区间 5-30s
+        created_at=datetime(2026, 1, 1, tzinfo=timezone.utc),
+        metadata={"generation_use_count": use_count},
+    )
+
+
+# ── score_asset 单元测试：unused 维度降权 ─────────────────────────────────────
+
+
+class TestScoreAssetUnusedDiminsh:
+    """验证 unused 维度：使用次数越多，评分越低。"""
+
+    def test_unused_scores_higher_than_used(self):
+        """use_count=0 的素材评分高于 use_count>0 的。"""
+        fresh = _asset_with_use_count("fresh", 0)
+        used = _asset_with_use_count("used", 1)
+        fresh_score, _ = score_asset(fresh)
+        used_score, _ = score_asset(used)
+        assert fresh_score > used_score
+
+    def test_high_use_count_scores_lower_than_low(self):
+        """use_count=5 的素材评分低于 use_count=1 的。"""
+        low_use = _asset_with_use_count("low", 1)
+        high_use = _asset_with_use_count("high", 5)
+        low_score, _ = score_asset(low_use)
+        high_score, _ = score_asset(high_use)
+        assert low_score > high_score
+
+    def test_unused_breakdown_values(self):
+        """验证 unused 维度的具体分值。"""
+        fresh = _asset_with_use_count("fresh", 0)
+        low = _asset_with_use_count("low", 2)
+        high = _asset_with_use_count("high", 10)
+
+        _, fresh_bd = score_asset(fresh)
+        _, low_bd = score_asset(low)
+        _, high_bd = score_asset(high)
+
+        # use_count=0 → unused_score=100 → component=10.0
+        assert fresh_bd["unused"] == 10.0
+        # use_count=2 → unused_score=70 → component=7.0
+        assert low_bd["unused"] == 7.0
+        # use_count=10 → unused_score=30 → component=3.0
+        assert high_bd["unused"] == 3.0
+
+    def test_monotonically_decreasing_scores(self):
+        """使用次数递增时，总评分单调不增。"""
+        scores = []
+        for count in [0, 1, 2, 3, 5, 10, 50]:
+            a = _asset_with_use_count(f"a{count}", count)
+            s, _ = score_asset(a)
+            scores.append(s)
+        # 验证非递增
+        for i in range(len(scores) - 1):
+            assert (
+                scores[i] >= scores[i + 1]
+            ), f"use_count 递增时评分应不增: scores[{i}]={scores[i]} < scores[{i+1}]={scores[i+1]}"
+
+
+# ── smart_select_assets 排序测试 ─────────────────────────────────────────────
+
+
+class TestSmartSelectAssetsOrdering:
+    """验证 smart_select_assets 返回结果按评分降序。"""
+
+    def test_less_used_assets_ranked_higher(self):
+        """使用次数少的素材在结果中排名更高。"""
+        assets = [
+            _asset_with_use_count("heavily_used", 10),
+            _asset_with_use_count("never_used", 0),
+            _asset_with_use_count("lightly_used", 2),
+        ]
+        results = smart_select_assets(assets)
+        ids = [r.asset.id for r in results]
+        # never_used 排第一，heavily_used 排最后
+        assert ids[0] == "never_used"
+        assert ids[-1] == "heavily_used"
+
+    def test_same_quality_different_use_count(self):
+        """质量相同时，使用次数少的排名更高。"""
+        assets = [
+            _asset_with_use_count("used_5", 5),
+            _asset_with_use_count("used_0", 0),
+        ]
+        results = smart_select_assets(assets)
+        assert results[0].asset.id == "used_0"
+        assert results[1].asset.id == "used_5"
+
+
+# ── from-assets 路径集成测试 ─────────────────────────────────────────────────
+
+
+def _make_mock_asset_for_clips(aid, duration, use_count=0):
+    """创建带 score_asset 所需属性的 mock 素材。"""
+    asset = MagicMock()
+    asset.id = aid
+    asset.duration = duration
+    asset.quality_score = None
+    asset.created_at = None
+    asset.metadata = {"generation_use_count": use_count}
+    return asset
+
+
+def _make_auth_user():
+    auth = MagicMock()
+    auth.user.id = "user-001"
+    auth.user.email = "test@example.com"
+    auth.user.display_name = "测试用户"
+    auth.user_id = "user-001"
+    return auth
+
+
+class TestFromAssetsSmartMatchIntegration:
+    """验证 clips.py 中 sorted_candidates 使用 smart_match 评分。"""
+
+    def test_sorted_candidates_prefers_high_score_low_use_count(self):
+        """在 from-assets 路径中，smart_match 分高且使用次数少的素材排在前面。"""
+        from app.api.routes.templates_editor.clips import create_clips_from_assets_editor
+        from app.api.routes.templates_editor.schemas import ClipsFromAssetsRequest
+
+        mock_asset_repo = MagicMock()
+
+        def _get_asset(aid):
+            use_count = {"a_heavy": 10, "a_fresh": 0}[aid]
+            return _make_mock_asset_for_clips(aid, 30.0, use_count)
+
+        mock_asset_repo.get = MagicMock(side_effect=_get_asset)
+
+        mock_plan_svc = MagicMock()
+        mock_plan_svc.replace_all_clips_transactional = MagicMock(return_value=2)
+
+        segments = [(0, 3.0, 5.0), (1, 3.0, 5.0)]
+
+        with (
+            patch(
+                "app.api.routes.templates_editor.clips._get_template_segments",
+                return_value=segments,
+            ),
+            patch(
+                "app.api.routes.templates_editor.clips.get_used_segments",
+                return_value={},
+            ),
+            patch(
+                "app.api.routes.templates_editor.clips.record_used_segments",
+                return_value=None,
+            ),
+        ):
+            body = ClipsFromAssetsRequest(
+                asset_ids=["a_heavy", "a_fresh"],
+                required_clips_count=2,
+            )
+            create_clips_from_assets_editor(
+                template_id="tmpl-1",
+                body=body,
+                background_tasks=MagicMock(),
+                plan_id="test-plan-001",
+                services=(MagicMock(), mock_plan_svc),
+                asset_repo=mock_asset_repo,
+                db=MagicMock(),
+                current_user=_make_auth_user(),
+            )
+
+        # 验证 replace_all_clips_transactional 被调用
+        assert mock_plan_svc.replace_all_clips_transactional.called
+        call_args = mock_plan_svc.replace_all_clips_transactional.call_args
+        clips_data = call_args.args[1]
+
+        # 第一个片段应该分配给 a_fresh（smart_match 分更高）
+        first_clip_asset = clips_data[0]["asset_id"]
+        assert (
+            first_clip_asset == "a_fresh"
+        ), f"第一个片段应分配给 smart_match 分更高的 a_fresh，实际是 {first_clip_asset}"
+
+
+# ── 一键生成路径集成测试 ─────────────────────────────────────────────────────
+
+
+class TestPlanGeneratorSmartMatchIntegration:
+    """验证 PlanGeneratorService._sort_assets_by_smart_score 排序正确。"""
+
+    def test_sort_assets_by_smart_score_descending(self):
+        """_sort_assets_by_smart_score 返回按评分降序排列的素材 ID。"""
+        from app.services.plan_generator_service import PlanGeneratorService
+
+        mock_asset_repo = MagicMock()
+
+        def _get_asset(aid):
+            use_count = {"high_use": 10, "low_use": 0, "mid_use": 3}[aid]
+            asset = MagicMock()
+            asset.id = aid
+            asset.duration = 15.0
+            asset.quality_score = None
+            asset.created_at = None
+            asset.metadata = {"generation_use_count": use_count}
+            return asset
+
+        mock_asset_repo.get = MagicMock(side_effect=_get_asset)
+
+        db = MagicMock()
+        svc = PlanGeneratorService(db, asset_repo=mock_asset_repo)
+
+        sorted_ids = svc._sort_assets_by_smart_score(["high_use", "low_use", "mid_use"])
+
+        # low_use (0次) 应排第一，high_use (10次) 应排最后
+        assert sorted_ids[0] == "low_use"
+        assert sorted_ids[-1] == "high_use"
+        assert sorted_ids[1] == "mid_use"
+
+    def test_distribute_assets_uses_smart_score_ordering(self):
+        """_distribute_assets 在非随机模式下按 smart_match 评分排序素材。"""
+        from app.services.plan_generator_service import PlanGeneratorService
+
+        from packages.domain.edit_plan_clip import EditPlanClip
+        from packages.domain.editing_mode import EditingMode
+
+        mock_asset_repo = MagicMock()
+
+        def _get_asset(aid):
+            use_count = {"old_asset": 10, "new_asset": 0}[aid]
+            asset = MagicMock()
+            asset.id = aid
+            asset.duration = 30.0
+            asset.quality_score = None
+            asset.created_at = None
+            asset.metadata = {"generation_use_count": use_count}
+            return asset
+
+        mock_asset_repo.get = MagicMock(side_effect=_get_asset)
+
+        db = MagicMock()
+        svc = PlanGeneratorService(db, asset_repo=mock_asset_repo)
+
+        # 创建 2 个 main clips（需要提供 id 参数）
+        clips = [
+            EditPlanClip(id="c1", plan_id="p1", clip_type="main", duration=5.0, order=0),
+            EditPlanClip(id="c2", plan_id="p1", clip_type="main", duration=5.0, order=1),
+        ]
+
+        with patch("app.services.plan_generator_service.distribute_assets") as mock_dist:
+            svc._distribute_assets(
+                clips,
+                ["old_asset", "new_asset"],
+                EditingMode.ONE_TAKE.value,
+                random_selection=False,
+            )
+            # 验证传给 distribute_assets 的 asset_ids 按 smart_match 排序
+            call_args = mock_dist.call_args
+            passed_ids = call_args.args[1]
+            # new_asset (0次使用) 应排在 old_asset (10次使用) 前面
+            assert passed_ids[0] == "new_asset"
+            assert passed_ids[1] == "old_asset"
+
+    def test_random_selection_skips_smart_score_sort(self):
+        """random_selection=True 时不执行 smart_match 排序。"""
+        from app.services.plan_generator_service import PlanGeneratorService
+
+        from packages.domain.edit_plan_clip import EditPlanClip
+        from packages.domain.editing_mode import EditingMode
+
+        mock_asset_repo = MagicMock()
+        db = MagicMock()
+        svc = PlanGeneratorService(db, asset_repo=mock_asset_repo)
+
+        clips = [
+            EditPlanClip(id="c1", plan_id="p1", clip_type="main", duration=5.0, order=0),
+        ]
+
+        with patch("app.services.plan_generator_service.distribute_assets") as mock_dist:
+            svc._distribute_assets(
+                clips,
+                ["a1", "a2"],
+                EditingMode.ONE_TAKE.value,
+                random_selection=True,
+            )
+            # random_selection=True 时不应调用 asset_repo.get（不执行排序）
+            mock_asset_repo.get.assert_not_called()