diff --git a/backend/agenteval/evaluation/analysis.py b/backend/agenteval/evaluation/analysis.py
index 56833da..764b0ea 100644
--- a/backend/agenteval/evaluation/analysis.py
+++ b/backend/agenteval/evaluation/analysis.py
@@ -13,7 +13,7 @@ from typing import Any, Awaitable, Callable, Optional
 
 from sqlmodel import Session
 
-from agenteval.evaluation.report import generate_campaign_report
+from agenteval.evaluation.report import load_campaign_report
 from agenteval.exploration.summary import summarize_campaign_exploration
 from agenteval.model_gateway import ModelGateway
 from agenteval.models import Campaign, ModelCapability, RunStatus
@@ -28,7 +28,6 @@ from agenteval.storage.repository import (
     CampaignAnalysisRepository,
     CampaignRepository,
     RunRepository,
-    ScenarioRepository,
 )
 from agenteval.utils.llm import extract_reply_text, parse_json_from_llm_text
 
@@ -306,8 +305,7 @@ async def execute_campaign_analysis(
         try:
             client = chat_client or gateway_chat_client(runtime)
             runs = RunRepository(session).list_by_campaign(campaign_id)
-            scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
-            report = generate_campaign_report(campaign, runs, scenario_names=scenario_names)
+            report = load_campaign_report(session, campaign)
             result = await analyze_campaign(
                 campaign=campaign,
                 report=report,
diff --git a/backend/agenteval/evaluation/comparison.py b/backend/agenteval/evaluation/comparison.py
index 1243241..7d8bd7b 100644
--- a/backend/agenteval/evaluation/comparison.py
+++ b/backend/agenteval/evaluation/comparison.py
@@ -15,15 +15,13 @@ from typing import Any, Optional
 from sqlmodel import Session
 
 from agenteval.evaluation.analysis import ChatClient, gateway_chat_client, resolve_analysis_model
-from agenteval.evaluation.report import generate_campaign_report
-from agenteval.models import Campaign, EvalRun
+from agenteval.evaluation.report import load_campaign_report
+from agenteval.models import Campaign
 from agenteval.storage.db import get_session, iso_utc, utc_now
 from agenteval.storage.repository import (
     CampaignAnalysisRepository,
     CampaignPeriodComparisonRepository,
     CampaignRepository,
-    RunRepository,
-    ScenarioRepository,
 )
 from agenteval.utils.llm import parse_json_from_llm_text
 
@@ -154,21 +152,14 @@ def compute_metric_diff(
     return {"overall": overall, "scenarios": scenarios}
 
 
-def build_campaign_report_dict(campaign: Campaign, session: Session) -> dict[str, Any]:
-    """为周期对比现算一期活动的报告 dict（读路径，不重算聚合口径）。"""
-    runs: list[EvalRun] = RunRepository(session).list_by_campaign(campaign.id)
-    scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
-    return generate_campaign_report(campaign, runs, scenario_names=scenario_names)
-
-
 def build_comparison_payload(campaign: Campaign, session: Session) -> dict[str, Any]:
     """GET 返回体：自动基线信息 + 机械 diff（无基线时两者均为 null）。"""
     baseline = resolve_auto_baseline(campaign, session)
     if baseline is None:
         return {"auto_baseline": None, "metric_diff": None}
     diff = compute_metric_diff(
-        build_campaign_report_dict(baseline, session),
-        build_campaign_report_dict(campaign, session),
+        load_campaign_report(session, baseline),
+        load_campaign_report(session, campaign),
     )
     return {
         "auto_baseline": {
@@ -358,8 +349,8 @@ async def execute_campaign_comparison(
         )
         try:
             diff = compute_metric_diff(
-                build_campaign_report_dict(baseline, session),
-                build_campaign_report_dict(campaign, session),
+                load_campaign_report(session, baseline),
+                load_campaign_report(session, campaign),
             )
             valid_scenario_ids = {s["scenario_id"] for s in diff["scenarios"]}
             result = await narrate_period_comparison(
diff --git a/backend/agenteval/evaluation/report.py b/backend/agenteval/evaluation/report.py
index 6cd91ab..05f4b4a 100644
--- a/backend/agenteval/evaluation/report.py
+++ b/backend/agenteval/evaluation/report.py
@@ -9,6 +9,8 @@ from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any, Optional
 
+from sqlmodel import Session
+
 from agenteval.evaluation.case_verdict import CaseEvidence, resolve_case_verdicts
 from agenteval.evaluation.metrics import aggregate_runs
 from agenteval.evaluation.report_render import render_html, render_json, render_markdown
@@ -359,6 +361,12 @@ def generate_campaign_report(
     }
 
 
+def load_campaign_report(session: Session, campaign: Campaign) -> dict[str, Any]:
+    """取数 + 聚合一步完成：报告 / 分析 / 对比 / 导出共用的活动报告 dict 取法。"""
+    runs = RunRepository(session).list_by_campaign(campaign.id)
+    return generate_campaign_report(campaign, runs, scenario_names=ScenarioRepository(session).name_map())
+
+
 def save_report(run_id: str, fmt: str = "html", output_dir: Optional[Path] = None) -> Path:
     """Generate a run report and save it to disk in the requested format."""
     output_dir = output_dir or DATA_DIR / "reports"
diff --git a/backend/agenteval/storage/repository.py b/backend/agenteval/storage/repository.py
index 2e2e26e..ed1fe83 100644
--- a/backend/agenteval/storage/repository.py
+++ b/backend/agenteval/storage/repository.py
@@ -247,6 +247,10 @@ class ScenarioRepository(BaseRepository[Scenario, ScenarioDB]):
             raise
         return True
 
+    def name_map(self) -> dict[str, str]:
+        """scenario_id → 名称映射：报告 / 时间线 / 列表等读路径共用的场景名取法。"""
+        return {sid: name for sid, name in self.session.exec(select(ScenarioDB.id, ScenarioDB.name)).all()}
+
 
 class RunRepository(BaseRepository[EvalRun, EvalRunDB]):
     """Repository for evaluation runs."""
diff --git a/backend/agenteval/web/routers/campaigns.py b/backend/agenteval/web/routers/campaigns.py
index 02da459..f60a3ce 100644
--- a/backend/agenteval/web/routers/campaigns.py
+++ b/backend/agenteval/web/routers/campaigns.py
@@ -14,7 +14,6 @@ from sqlmodel import Session
 from agenteval.evaluation.analysis import resolve_analysis_model, start_campaign_analysis
 from agenteval.evaluation.campaign_runner import campaign_progress, request_cancel, start_campaign
 from agenteval.evaluation.comparison import (
-    build_campaign_report_dict,
     build_comparison_payload,
     compute_metric_diff,
     resolve_auto_baseline,
@@ -22,7 +21,7 @@ from agenteval.evaluation.comparison import (
 )
 from agenteval.evaluation.report import (
     build_campaign_timeline,
-    generate_campaign_report,
+    load_campaign_report,
     summarize_campaign_progress,
 )
 from agenteval.evaluation.report_render import render_campaign_markdown
@@ -131,9 +130,7 @@ async def get_campaign_report(campaign_id: str, session: Session = Depends(get_d
     campaign = CampaignRepository(session).get(campaign_id)
     if not campaign:
         raise HTTPException(status_code=404, detail="campaign not found")
-    runs = RunRepository(session).list_by_campaign(campaign_id)
-    scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
-    report = generate_campaign_report(campaign, runs, scenario_names=scenario_names)
+    report = load_campaign_report(session, campaign)
     exploration = summarize_campaign_exploration(session, campaign_id)
     if exploration is not None:
         report["exploration"] = exploration
@@ -145,8 +142,8 @@ async def get_campaign_report_markdown(campaign_id: str, session: Session = Depe
     campaign = CampaignRepository(session).get(campaign_id)
     if not campaign:
         raise HTTPException(status_code=404, detail="campaign not found")
-    runs = RunRepository(session).list_by_campaign(campaign_id)
-    scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
+    report = load_campaign_report(session, campaign)
+    scenario_names = ScenarioRepository(session).name_map()
     analysis_row = CampaignAnalysisRepository(session).get_by_campaign(campaign_id)
     analysis = analysis_row.get_result() if analysis_row and analysis_row.status == "completed" else None
     target = TargetRepository(session).get(campaign.target_id)
@@ -158,8 +155,8 @@ async def get_campaign_report_markdown(campaign_id: str, session: Session = Depe
         baseline = CampaignRepository(session).get(cmp_row.baseline_campaign_id)
         metric_diff = (
             compute_metric_diff(
-                build_campaign_report_dict(baseline, session),
-                build_campaign_report_dict(campaign, session),
+                load_campaign_report(session, baseline),
+                load_campaign_report(session, campaign),
             )
             if baseline is not None
             else None
@@ -178,7 +175,7 @@ async def get_campaign_report_markdown(campaign_id: str, session: Session = Depe
         }
 
     md = render_campaign_markdown(
-        generate_campaign_report(campaign, runs, scenario_names=scenario_names),
+        report,
         analysis=analysis,
         comparison=comparison,
         exploration=summarize_campaign_exploration(session, campaign_id),
@@ -198,7 +195,7 @@ async def get_campaign_timeline(campaign_id: str, session: Session = Depends(get
     if not campaign:
         raise HTTPException(status_code=404, detail="campaign not found")
     runs = RunRepository(session).list_by_campaign(campaign_id)
-    scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
+    scenario_names = ScenarioRepository(session).name_map()
     return {"entries": build_campaign_timeline(campaign, runs, scenario_names=scenario_names)}
 
 
@@ -254,8 +251,8 @@ async def get_campaign_comparison(campaign_id: str, session: Session = Depends(g
     baseline = CampaignRepository(session).get(row.baseline_campaign_id)
     metric_diff = (
         compute_metric_diff(
-            build_campaign_report_dict(baseline, session),
-            build_campaign_report_dict(campaign, session),
+            load_campaign_report(session, baseline),
+            load_campaign_report(session, campaign),
         )
         if baseline is not None
         else None
diff --git a/backend/agenteval/web/routers/exploration.py b/backend/agenteval/web/routers/exploration.py
index 5257830..1cc7b4d 100644
--- a/backend/agenteval/web/routers/exploration.py
+++ b/backend/agenteval/web/routers/exploration.py
@@ -131,7 +131,7 @@ async def patrol(session: Session = Depends(get_db)) -> dict:
     campaign_repo = CampaignRepository(session)
     run_repo = RunRepository(session)
     exploration_repo = ExplorationSessionRepository(session)
-    scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
+    scenario_names = ScenarioRepository(session).name_map()
     target_names = {t.id: t.name for t in TargetRepository(session).list_all()}
 
     patrolled_at = utc_now()
diff --git a/backend/agenteval/web/routers/runs.py b/backend/agenteval/web/routers/runs.py
index fc20a45..2608658 100644
--- a/backend/agenteval/web/routers/runs.py
+++ b/backend/agenteval/web/routers/runs.py
@@ -68,7 +68,7 @@ async def _run_evaluation(
 
 @router.get("")
 async def list_runs(session: Session = Depends(get_db)) -> list[dict]:
-    scenario_names = {s.id: s.name for s in ScenarioRepository(session).list_all()}
+    scenario_names = ScenarioRepository(session).name_map()
     target_names = {t.id: t.name for t in TargetRepository(session).list_all()}
     return [
         {
diff --git a/backend/agenteval/web/routers/stats.py b/backend/agenteval/web/routers/stats.py
index cd4f743..952e1e2 100644
--- a/backend/agenteval/web/routers/stats.py
+++ b/backend/agenteval/web/routers/stats.py
@@ -36,11 +36,10 @@ def _settled(runs: list[EvalRun]) -> list[EvalRun]:
 @router.get("/dashboard")
 def dashboard(session: Session = Depends(get_db)) -> dict:
     targets = TargetRepository(session).list_all()
-    scenarios = ScenarioRepository(session).list_all()
+    scenario_names = ScenarioRepository(session).name_map()
     runs = RunRepository(session).list_all()
     model_configs = ModelConfigRepository(session).list_all()
 
-    scenario_names = {s.id: s.name for s in scenarios}
     target_names = {t.id: t.name for t in targets}
 
     settled_runs = _settled(runs)
@@ -82,7 +81,7 @@ def dashboard(session: Session = Depends(get_db)) -> dict:
 
     return {
         "targets_count": len(targets),
-        "scenarios_count": len(scenarios),
+        "scenarios_count": len(scenario_names),
         "runs_count": len(runs),
         "model_configs_count": len(model_configs),
         "today_runs": today_runs,
diff --git a/tests/integration/test_exploration_api.py b/tests/integration/test_exploration_api.py
index 4eaba49..bd220ee 100644
--- a/tests/integration/test_exploration_api.py
+++ b/tests/integration/test_exploration_api.py
@@ -178,6 +178,7 @@ async def test_full_lifecycle_create_message_close(seeded_db, mock_channel, clie
 async def test_dict_reply_content_is_flattened_to_text(seeded_db, monkeypatch, client):
     """通道回复 content 为对象（如 tutu msgBody）时应提取文本而非存 str(dict)。"""
     from agenteval.channels.base import Reply
+
     from tests.unit.mock_channel import MockChannel
 
     class _DictReplyChannel(MockChannel):
diff --git a/tests/unit/test_campaign_report_loader.py b/tests/unit/test_campaign_report_loader.py
new file mode 100644
index 0000000..3d0f12d
--- /dev/null
+++ b/tests/unit/test_campaign_report_loader.py
@@ -0,0 +1,96 @@
+"""活动报告读模型 load_campaign_report 与 ScenarioRepository.name_map 直测。
+
+读模型是报告 / 分析 / 对比 / 导出共用的「取数 + 聚合」单一出口：
+返回结果必须与手写三件套（list_by_campaign + scenario_names + generate_campaign_report）完全一致。
+"""
+
+from datetime import datetime, timedelta, timezone
+
+import pytest
+from agenteval.evaluation.report import generate_campaign_report, load_campaign_report
+from agenteval.models import Campaign, CampaignPlanEntry, CampaignStatus, Case, CaseType, EvalRun, RunStatus, Scenario
+from agenteval.storage.repository import CampaignRepository, RunRepository, ScenarioRepository
+from sqlmodel import Session, SQLModel, create_engine
+
+T0 = datetime(2026, 1, 1, 0, 0, 0, tzinfo=timezone.utc)
+
+
+@pytest.fixture()
+def db_session(tmp_path):
+    from agenteval.storage.db import (  # noqa: F401
+        CampaignDB,
+        EvalResultDB,
+        EvalRunDB,
+        EvalTargetDB,
+        FileCategoryDB,
+        FileRecordDB,
+        ScenarioDB,
+        TurnDB,
+    )
+    engine = create_engine(
+        f"sqlite:///{tmp_path / 'loader.db'}",
+        connect_args={"check_same_thread": False},
+    )
+    SQLModel.metadata.create_all(engine)
+    session = Session(engine)
+    try:
+        yield session
+    finally:
+        session.close()
+        engine.dispose()
+
+
+def _seed(session) -> Campaign:
+    ScenarioRepository(session).create(Scenario(
+        id="s-a", name="夜间问诊",
+        cases=[Case(id="c1", type=CaseType.SINGLE, messages=["hi"])],
+    ))
+    campaign = CampaignRepository(session).create(Campaign(
+        name="cycle", target_id="t-1", window_seconds=12, time_scale=1.0,
+        plan=[CampaignPlanEntry(scenario_id="s-a", offset_seconds=0, count=1)],
+    ))
+    campaign.status = CampaignStatus.RUNNING
+    campaign.started_at = T0
+    campaign = CampaignRepository(session).update(campaign)
+    RunRepository(session).create(EvalRun(
+        target_id="t-1", scenario_id="s-a", campaign_id=campaign.id,
+        status=RunStatus.COMPLETED, started_at=T0 + timedelta(seconds=1),
+        summary={"total_cases": 1, "passed_cases": 1, "pass_rate": 1.0, "avg_latency_ms": 100},
+    ))
+    return campaign
+
+
+def test_load_campaign_report_matches_manual_trio(db_session):
+    campaign = _seed(db_session)
+    report = load_campaign_report(db_session, campaign)
+
+    runs = RunRepository(db_session).list_by_campaign(campaign.id)
+    scenario_names = {s.id: s.name for s in ScenarioRepository(db_session).list_all()}
+    expected = generate_campaign_report(campaign, runs, scenario_names=scenario_names)
+
+    assert report == expected
+    cap = next(c for c in report["capability_summary"] if c["scenario_id"] == "s-a")
+    assert cap["scenario_name"] == "夜间问诊"
+
+
+def test_load_campaign_report_empty_campaign(db_session):
+    campaign = CampaignRepository(db_session).create(Campaign(
+        name="empty", target_id="t-1", window_seconds=12,
+        plan=[CampaignPlanEntry(scenario_id="s-x", offset_seconds=0, count=1)],
+    ))
+    report = load_campaign_report(db_session, campaign)
+    assert report["summary"]["total_runs"] == 0
+    assert report["capability_summary"] == []
+
+
+def test_scenario_name_map(db_session):
+    _seed(db_session)
+    ScenarioRepository(db_session).create(Scenario(
+        id="s-b", name="缴费引导",
+        cases=[Case(id="c2", type=CaseType.SINGLE, messages=["缴费"])],
+    ))
+    assert ScenarioRepository(db_session).name_map() == {"s-a": "夜间问诊", "s-b": "缴费引导"}
+
+
+def test_scenario_name_map_empty(db_session):
+    assert ScenarioRepository(db_session).name_map() == {}