diff --git a/backend/agenteval/intelligent_eval/decision_logs.py b/backend/agenteval/intelligent_eval/decision_logs.py
index 824b05b..b6e0c5f 100644
--- a/backend/agenteval/intelligent_eval/decision_logs.py
+++ b/backend/agenteval/intelligent_eval/decision_logs.py
@@ -28,7 +28,8 @@ def _log_to_dict(log: IntelligentEvalDecisionLogDB) -> dict:
 
 
 def _require_eval(eval_id: str, session: Session) -> None:
-    if session.get(IntelligentEvalDB, eval_id) is None:
+    eval_db = session.get(IntelligentEvalDB, eval_id)
+    if eval_db is None or eval_db.status == IntelligentEvalStatus.DELETED.value:
         raise LookupError(f"intelligent eval {eval_id} not found")
 
 
@@ -118,9 +119,7 @@ def count_decisions(eval_id: str, decision_type: str, session: Session) -> int:
 
 def list_decision_logs(eval_id: str, session: Session) -> list[dict]:
     """List decision logs for an eval. Raises ``LookupError`` if eval not found."""
-    eval_db = session.get(IntelligentEvalDB, eval_id)
-    if eval_db is None:
-        raise LookupError(f"intelligent eval {eval_id} not found")
+    _require_eval(eval_id, session)
 
     logs = session.exec(
         select(IntelligentEvalDecisionLogDB)
diff --git a/backend/agenteval/intelligent_eval/lifecycle.py b/backend/agenteval/intelligent_eval/lifecycle.py
index 5830d62..e0b12cd 100644
--- a/backend/agenteval/intelligent_eval/lifecycle.py
+++ b/backend/agenteval/intelligent_eval/lifecycle.py
@@ -6,6 +6,7 @@
                                                   → failed
   pending_approval 可打回 → planning（附反馈）
   executing 可取消 → cancelled
+  completed / cancelled / failed 可删除 → deleted（逻辑删除）
 
 非法转换抛 IntelligentEvalTransitionError，路由层映射为 409。
 """
@@ -50,9 +51,10 @@ _TRANSITIONS: dict[IntelligentEvalStatus, set[IntelligentEvalStatus]] = {
         IntelligentEvalStatus.CANCELLED,
         IntelligentEvalStatus.FAILED,
     },
-    IntelligentEvalStatus.COMPLETED: set(),
-    IntelligentEvalStatus.CANCELLED: set(),
-    IntelligentEvalStatus.FAILED: set(),
+    IntelligentEvalStatus.COMPLETED: {IntelligentEvalStatus.DELETED},
+    IntelligentEvalStatus.CANCELLED: {IntelligentEvalStatus.DELETED},
+    IntelligentEvalStatus.FAILED: {IntelligentEvalStatus.DELETED},
+    IntelligentEvalStatus.DELETED: set(),
 }
 
 
@@ -197,6 +199,17 @@ def cancel(session: Session, eval_id: str) -> IntelligentEval:
     return _transition(repo, ev, IntelligentEvalStatus.CANCELLED)
 
 
+def delete_eval(session: Session, eval_id: str) -> IntelligentEval:
+    """逻辑删除：completed / cancelled / failed → deleted。幂等：已删除直接返回。"""
+    repo = IntelligentEvalRepository(session)
+    ev = repo._get_raw(eval_id)
+    if ev is None:
+        raise IntelligentEvalNotFoundError(f"intelligent eval {eval_id} not found")
+    if ev.status is IntelligentEvalStatus.DELETED:
+        return ev
+    return _transition(repo, ev, IntelligentEvalStatus.DELETED)
+
+
 def submit_report(session: Session, eval_id: str, report: dict[str, Any]) -> IntelligentEval:
     """OpenClaw 提交结构化报告：executing → completed。
 
diff --git a/backend/agenteval/intelligent_eval/models.py b/backend/agenteval/intelligent_eval/models.py
index 0c8a322..95a48cd 100644
--- a/backend/agenteval/intelligent_eval/models.py
+++ b/backend/agenteval/intelligent_eval/models.py
@@ -20,6 +20,7 @@ class IntelligentEvalStatus(str, Enum):
     COMPLETED = "completed"
     CANCELLED = "cancelled"
     FAILED = "failed"
+    DELETED = "deleted"
 
 
 class IntelligentEvalSessionStatus(str, Enum):
diff --git a/backend/agenteval/intelligent_eval/repository.py b/backend/agenteval/intelligent_eval/repository.py
index 7b28e71..bb3201c 100644
--- a/backend/agenteval/intelligent_eval/repository.py
+++ b/backend/agenteval/intelligent_eval/repository.py
@@ -98,14 +98,25 @@ class IntelligentEvalRepository:
         )
 
     def list_all(self) -> list[IntelligentEval]:
-        statement = select(IntelligentEvalDB).order_by(IntelligentEvalDB.created_at.desc())
+        statement = (
+            select(IntelligentEvalDB)
+            .where(IntelligentEvalDB.status != IntelligentEvalStatus.DELETED.value)
+            .order_by(IntelligentEvalDB.created_at.desc())
+        )
         return [self._from_db(r) for r in self.session.exec(statement).all()]
 
     def list_page(
         self, offset: int, limit: int, status: Optional[str] = None
     ) -> list[IntelligentEval]:
-        """Return one page of evals (created_at desc), optionally filtered by status."""
-        statement = select(IntelligentEvalDB).order_by(IntelligentEvalDB.created_at.desc())
+        """Return one page of evals (created_at desc), optionally filtered by status.
+
+        Deleted evals are always excluded — the list API has no recycle bin.
+        """
+        statement = (
+            select(IntelligentEvalDB)
+            .where(IntelligentEvalDB.status != IntelligentEvalStatus.DELETED.value)
+            .order_by(IntelligentEvalDB.created_at.desc())
+        )
         if status:
             statement = statement.where(IntelligentEvalDB.status == status)
         statement = statement.offset(offset).limit(limit)
@@ -113,21 +124,32 @@ class IntelligentEvalRepository:
 
     def count(self) -> int:
         """Total number of evaluations (for pagination metadata)."""
-        return self.session.exec(select(func.count()).select_from(IntelligentEvalDB)).one()
+        return self.session.exec(
+            select(func.count())
+            .select_from(IntelligentEvalDB)
+            .where(IntelligentEvalDB.status != IntelligentEvalStatus.DELETED.value)
+        ).one()
 
     def count_by_status(self) -> dict[str, int]:
         """Count evaluations per status (for the list page stat bar)."""
         rows = self.session.exec(
-            select(IntelligentEvalDB.status, func.count(IntelligentEvalDB.id)).group_by(
-                IntelligentEvalDB.status
-            )
+            select(IntelligentEvalDB.status, func.count(IntelligentEvalDB.id))
+            .where(IntelligentEvalDB.status != IntelligentEvalStatus.DELETED.value)
+            .group_by(IntelligentEvalDB.status)
         ).all()
-        stats = {status.value: 0 for status in IntelligentEvalStatus}
+        stats = {status.value: 0 for status in IntelligentEvalStatus if status != IntelligentEvalStatus.DELETED}
         for status, cnt in rows:
             stats[status] = cnt
         return stats
 
     def get(self, eval_id: str) -> Optional[IntelligentEval]:
+        db = self.session.get(IntelligentEvalDB, eval_id)
+        if db is None or db.status == IntelligentEvalStatus.DELETED.value:
+            return None
+        return self._from_db(db)
+
+    def _get_raw(self, eval_id: str) -> Optional[IntelligentEval]:
+        """包含已删除评估的原样读取（仅供 delete 幂等检查使用）。"""
         db = self.session.get(IntelligentEvalDB, eval_id)
         return self._from_db(db) if db else None
 
@@ -144,7 +166,10 @@ class IntelligentEvalRepository:
                 IntelligentEvalSessionDB.eval_id == IntelligentEvalDB.id,
                 isouter=True,
             )
-            .where(IntelligentEvalDB.id == eval_id)
+            .where(
+                IntelligentEvalDB.id == eval_id,
+                IntelligentEvalDB.status != IntelligentEvalStatus.DELETED.value,
+            )
             .order_by(IntelligentEvalSessionDB.created_at.asc())
         )
         rows = self.session.exec(statement).all()
diff --git a/backend/agenteval/web/routers/intelligent_evals.py b/backend/agenteval/web/routers/intelligent_evals.py
index b7c5277..aa89626 100644
--- a/backend/agenteval/web/routers/intelligent_evals.py
+++ b/backend/agenteval/web/routers/intelligent_evals.py
@@ -70,6 +70,16 @@ def _translate(exc: Exception) -> HTTPException:
     return HTTPException(status_code=409, detail=exc.reason)
 
 
+def _require_eval_exists(session: Session, eval_id: str) -> None:
+    """404 when the eval is missing or logically deleted."""
+    from agenteval.intelligent_eval.models import IntelligentEvalStatus
+    from agenteval.storage.db import IntelligentEvalDB
+
+    eval_db = session.get(IntelligentEvalDB, eval_id)
+    if eval_db is None or eval_db.status == IntelligentEvalStatus.DELETED.value:
+        raise HTTPException(status_code=404, detail=f"intelligent eval {eval_id} not found")
+
+
 def _eval_response(ev, session: Session) -> dict:
     """Serialize one stable intelligent-evaluation read projection."""
 
@@ -195,6 +205,16 @@ async def cancel(eval_id: str, session: Session = Depends(get_db)) -> dict:
     return _eval_response(ev, session)
 
 
+@router.delete("/{eval_id}")
+async def delete_eval(eval_id: str, session: Session = Depends(get_db)) -> dict:
+    """逻辑删除已终态的评测。非终态返回 409，不存在返回 404，幂等。"""
+    try:
+        lifecycle.delete_eval(session, eval_id)
+    except (IntelligentEvalNotFoundError, IntelligentEvalTransitionError) as exc:
+        raise _translate(exc) from exc
+    return {"ok": True}
+
+
 @router.put("/{eval_id}/report")
 async def submit_report(eval_id: str, request: SubmitReportRequest, session: Session = Depends(get_db)) -> dict:
     try:
@@ -372,12 +392,8 @@ async def list_decision_logs(eval_id: str, session: Session = Depends(get_db)) -
 async def list_config_snapshots(eval_id: str, session: Session = Depends(get_db)) -> dict:
     """List all config snapshots for an evaluation."""
     from agenteval.intelligent_eval import config_snapshot
-    from agenteval.storage.db import IntelligentEvalDB
 
-    # Verify eval exists
-    eval_db = session.get(IntelligentEvalDB, eval_id)
-    if eval_db is None:
-        raise HTTPException(status_code=404, detail=f"intelligent eval {eval_id} not found")
+    _require_eval_exists(session, eval_id)
 
     snapshots = config_snapshot.list_snapshots(eval_id, session)
     return {
@@ -404,12 +420,8 @@ async def list_config_snapshots(eval_id: str, session: Session = Depends(get_db)
 async def get_config_snapshot(eval_id: str, snapshot_id: str, session: Session = Depends(get_db)) -> dict:
     """Get a single config snapshot."""
     from agenteval.intelligent_eval import config_snapshot
-    from agenteval.storage.db import IntelligentEvalDB
 
-    # Verify eval exists
-    eval_db = session.get(IntelligentEvalDB, eval_id)
-    if eval_db is None:
-        raise HTTPException(status_code=404, detail=f"intelligent eval {eval_id} not found")
+    _require_eval_exists(session, eval_id)
 
     snapshot = config_snapshot.get_snapshot(snapshot_id, session)
     if snapshot is None or snapshot.eval_id != eval_id:
@@ -443,12 +455,8 @@ async def compare_config_snapshots(
 ) -> dict:
     """Compare two config snapshots and return differences."""
     from agenteval.intelligent_eval import config_snapshot
-    from agenteval.storage.db import IntelligentEvalDB
 
-    # Verify eval exists
-    eval_db = session.get(IntelligentEvalDB, eval_id)
-    if eval_db is None:
-        raise HTTPException(status_code=404, detail=f"intelligent eval {eval_id} not found")
+    _require_eval_exists(session, eval_id)
 
     # Get both snapshots
     snapshot1 = config_snapshot.get_snapshot(request.snapshot_id_1, session)
diff --git a/frontend/web/src/api.ts b/frontend/web/src/api.ts
index 082ec45..7040515 100644
--- a/frontend/web/src/api.ts
+++ b/frontend/web/src/api.ts
@@ -607,7 +607,7 @@ export const campaignsApi = {
 
 export type IntelligentEvalStatus =
   | 'draft' | 'planning' | 'pending_approval'
-  | 'executing' | 'completed' | 'cancelled' | 'failed'
+  | 'executing' | 'completed' | 'cancelled' | 'failed' | 'deleted'
 
 export type IntelligentEvalSessionStatus = 'running' | 'completed' | 'failed' | 'expired'
 
@@ -826,6 +826,7 @@ export const intelligentEvalsApi = {
   reject: (id: string, feedback: string) =>
     api.post<IntelligentEval>(`/intelligent-evals/${id}/reject`, { feedback }),
   cancel: (id: string) => api.post<IntelligentEval>(`/intelligent-evals/${id}/cancel`),
+  remove: (id: string) => api.delete<{ ok: boolean }>(`/intelligent-evals/${id}`),
   listSessions: (id: string) =>
     api.get<{ sessions: IntelligentEvalSession[] }>(`/intelligent-evals/${id}/sessions`),
   listMessages: (id: string, sessionId: string) =>
diff --git a/frontend/web/src/components/intelligent_eval/status.ts b/frontend/web/src/components/intelligent_eval/status.ts
index 20bd366..a904fe3 100644
--- a/frontend/web/src/components/intelligent_eval/status.ts
+++ b/frontend/web/src/components/intelligent_eval/status.ts
@@ -8,8 +8,14 @@ export const EVAL_STATUS: Record<IntelligentEvalStatus, { label: string; color:
   completed: { label: '已完成', color: 'success' },
   cancelled: { label: '已取消', color: 'default' },
   failed: { label: '失败', color: 'error' },
+  deleted: { label: '已删除', color: 'default' },
 }
 
+// 终态集合（与后端 lifecycle 状态机一致）：仅终态评估可被逻辑删除
+export const TERMINAL_STATUSES: ReadonlySet<IntelligentEvalStatus> = new Set<IntelligentEvalStatus>([
+  'completed', 'cancelled', 'failed',
+])
+
 export const SESSION_STATUS: Record<IntelligentEvalSessionStatus, { label: string; color: string }> = {
   running: { label: '进行中', color: 'processing' },
   completed: { label: '已完成', color: 'success' },
diff --git a/frontend/web/src/pages/IntelligentEvals.tsx b/frontend/web/src/pages/IntelligentEvals.tsx
index c8e4700..810dda8 100644
--- a/frontend/web/src/pages/IntelligentEvals.tsx
+++ b/frontend/web/src/pages/IntelligentEvals.tsx
@@ -6,7 +6,7 @@ import {
 import type { TabsProps } from 'antd'
 import type { ColumnsType } from 'antd/es/table'
 import {
-  PlusOutlined, ReloadOutlined, StopOutlined, UnorderedListOutlined,
+  DeleteOutlined, PlusOutlined, ReloadOutlined, StopOutlined, UnorderedListOutlined,
 } from '@ant-design/icons'
 import FormDrawer from '../components/FormDrawer'
 import PageWrapper from '../components/PageWrapper'
@@ -15,7 +15,7 @@ import ExecutionProcess from '../components/intelligent_eval/ExecutionProcess'
 import DecisionProcess from '../components/intelligent_eval/DecisionProcess'
 import ConfigSnapshots from '../components/intelligent_eval/ConfigSnapshots'
 import EvalReport from '../components/intelligent_eval/EvalReport'
-import { EVAL_STATUS } from '../components/intelligent_eval/status'
+import { EVAL_STATUS, TERMINAL_STATUSES } from '../components/intelligent_eval/status'
 import { useResource } from '../hooks/useResource'
 import {
   intelligentEvalsApi, targetsApi,
@@ -143,6 +143,12 @@ export default function IntelligentEvalsPage() {
     }
   }
 
+  const handleDelete = async (id: string) => {
+    await intelligentEvalsApi.remove(id)
+    message.success('已删除')
+    void reloadList()
+  }
+
   const columns: ColumnsType<IntelligentEval> = [
     {
       title: '名称', dataIndex: 'name', key: 'name', width: 300, ellipsis: true,
@@ -184,9 +190,22 @@ export default function IntelligentEvalsPage() {
       render: (v: string | null) => (v ? formatDateTime(v) : '—'),
     },
     {
-      title: '操作', key: 'action', width: 88, fixed: 'right' as const,
+      title: '操作', key: 'action', width: 130, fixed: 'right' as const,
       render: (_, ev) => (
-        <Button size="small" onClick={() => openDetail(ev.id)}>查看</Button>
+        <Space size={4}>
+          <Button size="small" onClick={() => openDetail(ev.id)}>查看</Button>
+          {TERMINAL_STATUSES.has(ev.status) && (
+            <Popconfirm
+              title="确认删除"
+              description="删除后不可恢复，确定要删除该评估吗？"
+              onConfirm={() => handleDelete(ev.id)}
+              okText="删除"
+              cancelText="取消"
+            >
+              <Button size="small" danger icon={<DeleteOutlined />} onClick={(e) => e.stopPropagation()} />
+            </Popconfirm>
+          )}
+        </Space>
       ),
     },
   ]
diff --git a/tests/integration/test_intelligent_evals_api.py b/tests/integration/test_intelligent_evals_api.py
index f1d3693..6afa09c 100644
--- a/tests/integration/test_intelligent_evals_api.py
+++ b/tests/integration/test_intelligent_evals_api.py
@@ -598,3 +598,103 @@ class TestExecutionProgress:
     async def test_unknown_eval_returns_404(self, client, seeded_db):
         resp = await client.get("/api/intelligent-evals/missing/execution-progress")
         assert resp.status_code == 404
+
+
+class TestDeleteEval:
+    async def _create_completed(self, client) -> str:
+        eval_id = await _create_executing_eval(client)
+        resp = await client.put(f"/api/intelligent-evals/{eval_id}/report", json={"report": _report_payload()})
+        assert resp.status_code == 200, resp.text
+        return eval_id
+
+    async def _create_cancelled(self, client) -> str:
+        eval_id = await _create_executing_eval(client)
+        resp = await client.post(f"/api/intelligent-evals/{eval_id}/cancel")
+        assert resp.status_code == 200, resp.text
+        return eval_id
+
+    async def test_delete_completed_eval_hides_from_list_and_stats(self, client, seeded_db):
+        eval_id = await self._create_completed(client)
+
+        resp = await client.delete(f"/api/intelligent-evals/{eval_id}")
+        assert resp.status_code == 200, resp.text
+        assert resp.json() == {"ok": True}
+
+        list_resp = await client.get("/api/intelligent-evals", params={"page": 1})
+        data = list_resp.json()
+        assert all(ev["id"] != eval_id for ev in data["intelligent_evals"])
+        assert data["total"] == 0
+        assert data["stats"]["completed"] == 0
+
+    async def test_delete_cancelled_eval(self, client, seeded_db):
+        eval_id = await self._create_cancelled(client)
+
+        resp = await client.delete(f"/api/intelligent-evals/{eval_id}")
+        assert resp.status_code == 200, resp.text
+
+    async def test_delete_planning_eval_returns_409(self, client, seeded_db):
+        ev = await _create_eval(client)  # planning state
+
+        resp = await client.delete(f"/api/intelligent-evals/{ev['id']}")
+        assert resp.status_code == 409
+
+    async def test_delete_executing_eval_returns_409(self, client, seeded_db):
+        eval_id = await _create_executing_eval(client)
+
+        resp = await client.delete(f"/api/intelligent-evals/{eval_id}")
+        assert resp.status_code == 409
+
+    async def test_delete_unknown_eval_returns_404(self, client, seeded_db):
+        resp = await client.delete("/api/intelligent-evals/missing")
+        assert resp.status_code == 404
+
+    async def test_delete_twice_is_idempotent(self, client, seeded_db):
+        eval_id = await self._create_completed(client)
+
+        await client.delete(f"/api/intelligent-evals/{eval_id}")
+        resp = await client.delete(f"/api/intelligent-evals/{eval_id}")
+        assert resp.status_code == 200, resp.text
+
+    async def test_deleted_eval_detail_returns_404(self, client, seeded_db):
+        eval_id = await self._create_completed(client)
+        await client.delete(f"/api/intelligent-evals/{eval_id}")
+
+        resp = await client.get(f"/api/intelligent-evals/{eval_id}")
+        assert resp.status_code == 404
+
+    async def test_deleted_eval_subresources_return_404(self, client, seeded_db):
+        eval_id = await self._create_completed(client)
+        await client.delete(f"/api/intelligent-evals/{eval_id}")
+
+        sessions_resp = await client.get(f"/api/intelligent-evals/{eval_id}/sessions")
+        assert sessions_resp.status_code == 404
+        report_resp = await client.get(f"/api/intelligent-evals/{eval_id}/report")
+        assert report_resp.status_code == 404
+        markdown_resp = await client.get(f"/api/intelligent-evals/{eval_id}/report/markdown")
+        assert markdown_resp.status_code == 404
+        logs_resp = await client.get(f"/api/intelligent-evals/{eval_id}/decision-logs")
+        assert logs_resp.status_code == 404
+        snapshots_resp = await client.get(f"/api/intelligent-evals/{eval_id}/config-snapshots")
+        assert snapshots_resp.status_code == 404
+        progress_resp = await client.get(f"/api/intelligent-evals/{eval_id}/execution-progress")
+        assert progress_resp.status_code == 404
+
+    async def test_deleted_eval_rejects_new_decision_logs(self, client, seeded_db):
+        eval_id = await self._create_completed(client)
+        await client.delete(f"/api/intelligent-evals/{eval_id}")
+
+        resp = await client.post(
+            f"/api/intelligent-evals/{eval_id}/decision-logs",
+            json={"decision_type": "wait", "reason": "late agent report", "cron_id": "w-1"},
+        )
+        assert resp.status_code == 404
+
+    async def test_list_with_status_deleted_returns_empty(self, client, seeded_db):
+        eval_id = await self._create_completed(client)
+        await client.delete(f"/api/intelligent-evals/{eval_id}")
+
+        resp = await client.get("/api/intelligent-evals", params={"page": 1, "status": "deleted"})
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["intelligent_evals"] == []
+        assert data["total"] == 0