diff --git a/.agents/docs/plans/MCP化改造方案-2026-10-19.md b/.agents/docs/plans/MCP化改造方案-2026-10-19.md
index 2773b30..3876e1e 100644
--- a/.agents/docs/plans/MCP化改造方案-2026-10-19.md
+++ b/.agents/docs/plans/MCP化改造方案-2026-10-19.md
@@ -727,3 +727,19 @@ capture 只出现在 camera 段、脚本里不许再出现 `setAttribute`、两
 
 还没做的：自检的选择器只在 FakePage 上验证过，**真实页面待联机确认**（尤其是 payment/subsidy 两步的表头关键词），
 与第 4 条（乘车日期选择器）一起，等下一次联机填报时一并确认。
+
+## 24. 人工改组入口 manual_groups（2026-10-21，用户第 3 条）
+
+用户指出：match_payments 缺人工改组入口，等额票配错只能靠 remark 记一笔，下游 CSV / invoice_groups.json 仍是错的。
+
+- `match_from_cache(..., manual_groups=...)` 与工具参数同名透传；每项
+  `{"payment": 支付截图文件名或卡号, "invoices": [发票号或文件名...], "note": "..."}`
+- 规则：**一组必须全部唯一命中才应用**（payment 唯一 + 每张发票唯一）；否则整组不生效，原因进 `manual_gaps`。
+  宁可报「没生效」也不半套应用——半套会把账改得更乱，而且用户没法从 CSV 看出来
+- 应用时先把这些发票从所有记录里摘掉再挂到目标记录，避免一张票出现在两条记录里；
+  目标记录 remark=manual、附 manual_note，随后重算 matched/unmatched/review，重写 match_result.json、
+  payment_records.csv、invoice_summary.csv、invoice_groups.json
+- review_required 会加两条提示：多少组被人工覆盖、哪些组没生效
+- 单测 4 例：搬票并标记、未知发票整组不动、同卡号歧义报错、工具层参数透传
+
+边界：manual_groups 只改「发票 ↔ 支付」的归属，不改金额；金额本身错了要先回去修抽取（case_patch_extraction）。
diff --git a/docs/MCP.md b/docs/MCP.md
index e84f994..03056cc 100644
--- a/docs/MCP.md
+++ b/docs/MCP.md
@@ -260,11 +260,17 @@ cases/<case_id>/
 
     返回 matched / unmatched_invoices / unmatched_payments / review_required。
     未匹配与一对多凑额项必须复核，不要盲信贪心结果。
+    
+    等额发票被贪心配错时，用 manual_groups 人工改组（会重写 match_result.json / CSV / invoice_groups.json）：
+    每项 {"payment": 支付截图文件名或卡号, "invoices": [发票号或文件名, ...], "note": "为什么这样配"}。
+    **一组必须全部唯一命中才应用**，否则整组不生效并回在 manual_gaps 里；应用过的在 manual_applied，
+    对应记录的 remark 会变成 manual。别在半套命中的情况下改账。
 
 | 参数 | 类型 | 必填 | 默认 | 说明 |
 |------|------|------|------|------|
 | `case_id` | string | 是 | — | — |
 | `tolerance` | number/null | 否 | null | — |
+| `manual_groups` | array/null | 否 | null | — |
 
 ### `mcp__arb__info_skeleton`
 
diff --git a/docs/报销操作指南.md b/docs/报销操作指南.md
index 573892d..5ed695b 100644
--- a/docs/报销操作指南.md
+++ b/docs/报销操作指南.md
@@ -72,6 +72,7 @@ last_reviewed: 2026-10-19
 | 3 | 渲染页面与文本层 | `case_render_pages` → `case_read_text` 或直接读 PNG |
 | 4 | 逐张抽取落盘；核对后局部修正 | `case_save_extraction` / `case_patch_extraction` |
 | 5 | 金额匹配，**逐条处理 `review_required`** | `match_payments` |
+| 5b | 等额发票配错时人工改组（整组唯一命中才生效，没生效的原因在 `manual_gaps`） | `match_payments(manual_groups=...)` |
 | 6 | 取骨架 → 填值 → 落盘校验（试算用 `validate_info` 不落盘） | `info_skeleton` → `save_info` |
 | 7 | 普通发票生成申购单（`exclude` 剔除不参与申购的物品） | `doc_requisition` |
 | 8 | 随时复查态势；要重跑就清派生产物 | `case_status` / `case_reset` |
@@ -101,6 +102,8 @@ last_reviewed: 2026-10-19
 
 **什么时候算完成**：`validate_info` 报告 `valid: true` 且无业务约束违反。缺料就向用户要材料；
 Agent 不许自己宣布「可以提交了」。
+- 每步填报后工具会回读页面做**落库后自检**：数据行数与表尾合计跟 info 比对，差值写进 warnings，
+  返回里的 self_check 是原始读数。看到「自检不一致」先看图再决定重填，别当没看见。
 
 ### 产物位置
 
diff --git a/src/core/matching/runner.py b/src/core/matching/runner.py
index 9ab6a12..5305fc8 100644
--- a/src/core/matching/runner.py
+++ b/src/core/matching/runner.py
@@ -59,11 +59,99 @@ def save_invoice_groups(session_dir: Path, groups: dict[str, list[dict[str, Any]
     save_json(session_dir / "invoice_groups.json", data)
 
 
-def match_from_cache(case_dir: Path, tolerance: float | None = None) -> dict[str, Any]:
+def _invoice_keys(inv: dict[str, Any]) -> set[str]:
+    keys = set()
+    for key in ("invoice_number", "_source_file"):
+        value = str(inv.get(key) or "").strip()
+        if value:
+            keys.add(value)
+    return keys
+
+
+def _payment_keys(rec: dict[str, Any]) -> set[str]:
+    keys = set()
+    for key in ("_source_file", "card_no"):
+        value = str(rec.get(key) or "").strip()
+        if value:
+            keys.add(value)
+    return keys
+
+
+def _apply_manual_groups(
+    records: list[dict[str, Any]],
+    invoices: list[dict[str, Any]],
+    manual_groups: list[dict[str, Any]],
+) -> tuple[list[dict[str, Any]], list[dict[str, Any]], list[str]]:
+    """按人工指定的分组覆盖贪心匹配结果。
+
+    manual_groups 每项形如 {"invoices": [发票号或文件名, ...], "payment": 支付截图文件名或卡号, "note": "..."}。
+    规则：**一组必须全部唯一命中才应用**（payment 唯一 + 每张发票都能找到），否则整组不应用并进 gaps——
+    宁可报"没生效"也不能半套应用，那会把账改得更乱。
+    """
+    applied: list[dict[str, Any]] = []
+    gaps: list[str] = []
+    for idx, group in enumerate(manual_groups, start=1):
+        if not isinstance(group, dict):
+            gaps.append(f"第 {idx} 组不是对象，已跳过")
+            continue
+        payment_id = str(group.get("payment") or "").strip()
+        note = str(group.get("note") or "").strip()
+        raw_ids = group.get("invoices") or []
+        if not payment_id or not isinstance(raw_ids, list) or not raw_ids:
+            gaps.append(f"第 {idx} 组缺少 payment 或 invoices，已跳过")
+            continue
+        targets = [rec for rec in records if payment_id in _payment_keys(rec)]
+        if len(targets) != 1:
+            reason = "没命中任何支付记录" if not targets else f"命中 {len(targets)} 条支付记录，无法确定是哪一条"
+            gaps.append(f"第 {idx} 组 payment={payment_id!r} {reason}，整组未应用")
+            continue
+        resolved: list[dict[str, Any]] = []
+        unresolved: list[str] = []
+        for raw in raw_ids:
+            wanted = str(raw or "").strip()
+            hits = [inv for inv in invoices if wanted and wanted in _invoice_keys(inv)]
+            if len(hits) != 1:
+                unresolved.append(wanted or "（空）")
+                continue
+            resolved.append(hits[0])
+        if unresolved:
+            gaps.append(f"第 {idx} 组有发票没唯一命中：{'、'.join(unresolved)}，整组未应用")
+            continue
+        # 先从所有记录里摘掉这些发票，再挂到目标记录（避免同一张票出现在两条记录里）
+        move_keys: set[str] = set()
+        for inv in resolved:
+            move_keys |= _invoice_keys(inv)
+        for rec in records:
+            kept = [x for x in rec.get("_matched_invoices", []) if not (_invoice_keys(x) & move_keys)]
+            if len(kept) != len(rec.get("_matched_invoices", [])):
+                rec["_matched_invoices"] = kept
+        target = targets[0]
+        existing = target.setdefault("_matched_invoices", [])
+        existing.extend(resolved)
+        target["remark"] = "manual"
+        if note:
+            target["manual_note"] = note
+        applied.append(
+            {
+                "payment": str(target.get("_source_file") or payment_id),
+                "invoices": [str(inv.get("invoice_number") or inv.get("_source_file") or "") for inv in resolved],
+                "note": note,
+            }
+        )
+    return records, applied, gaps
+
+
+def match_from_cache(
+    case_dir: Path,
+    tolerance: float | None = None,
+    manual_groups: list[dict[str, Any]] | None = None,
+) -> dict[str, Any]:
     """按缓存内容执行金额匹配，返回结构化结果。
 
     返回字段里 review_required 是必须人工/模型复核的可疑点，
     不要当成错误——贪心匹配本来就可能在等额发票上给出错误分配。
+    manual_groups 见 _apply_manual_groups：人工指定「这几张票就是这一笔支付」，覆盖贪心结果；
+    没全部唯一命中的组不会应用，原因回在 manual_gaps 里（不许静默失败）。
     """
     cache_map = load_cache(case_dir)
     buckets = split_cache(cache_map)
@@ -79,6 +167,10 @@ def match_from_cache(case_dir: Path, tolerance: float | None = None) -> dict[str
 
     kwargs: dict[str, Any] = {} if tolerance is None else {"tolerance": tolerance}
     records = match_invoices_to_cards(invoices, cards, **kwargs)
+    manual_applied: list[dict[str, Any]] = []
+    manual_gaps: list[str] = []
+    if manual_groups:
+        records, manual_applied, manual_gaps = _apply_manual_groups(records, invoices, manual_groups)
     cache_dir = case_dir / ".invoice_cache"
     save_match_result(records, cache_dir)
 
@@ -143,6 +235,12 @@ def match_from_cache(case_dir: Path, tolerance: float | None = None) -> dict[str
     if multi:
         review.append(f"{len(multi)} 笔支付走了一对多贪心凑额，分配结果需逐笔核对（等额发票尤其容易配错）")
 
+    if manual_applied:
+        review.append(
+            f"{len(manual_applied)} 组按人工指定覆盖了贪心匹配（对应记录 remark=manual），下游 CSV 已按新分组重算"
+        )
+    if manual_gaps:
+        review.append(f"人工分组有 {len(manual_gaps)} 条没生效：" + "；".join(manual_gaps))
     has_travel = bool(groups.get("travel"))
     has_general = bool(groups.get("general"))
     if has_travel and not has_general:
@@ -169,4 +267,6 @@ def match_from_cache(case_dir: Path, tolerance: float | None = None) -> dict[str
             "attachments": len(groups.get("attachments", [])),
         },
         "suggested_invoice_type": suggested,
+        "manual_applied": manual_applied,
+        "manual_gaps": manual_gaps,
     }
diff --git a/src/mcp/tools/analysis.py b/src/mcp/tools/analysis.py
index 27681de..f9b2a6f 100644
--- a/src/mcp/tools/analysis.py
+++ b/src/mcp/tools/analysis.py
@@ -21,16 +21,25 @@ _store = CaseStore()
 _INFO_KEYS = {"travel": "travel_info", "normal": "normal_info"}
 
 
-def match_payments(case_id: str, tolerance: float | None = None) -> dict[str, Any]:
+def match_payments(
+    case_id: str,
+    tolerance: float | None = None,
+    manual_groups: list[dict[str, Any]] | None = None,
+) -> dict[str, Any]:
     """按缓存做发票与支付记录的金额匹配，并写出 CSV 与 invoice_groups.json。
 
     返回 matched / unmatched_invoices / unmatched_payments / review_required。
     未匹配与一对多凑额项必须复核，不要盲信贪心结果。
+
+    等额发票被贪心配错时，用 manual_groups 人工改组（会重写 match_result.json / CSV / invoice_groups.json）：
+    每项 {"payment": 支付截图文件名或卡号, "invoices": [发票号或文件名, ...], "note": "为什么这样配"}。
+    **一组必须全部唯一命中才应用**，否则整组不生效并回在 manual_gaps 里；应用过的在 manual_applied，
+    对应记录的 remark 会变成 manual。别在半套命中的情况下改账。
     """
     d = _store.resolve(case_id)
     if d is None:
         return fail(f"会话不存在: {case_id}", next_action="先 case_create 并 case_add_files")
-    result = match_from_cache(d, tolerance=tolerance)
+    result = match_from_cache(d, tolerance=tolerance, manual_groups=manual_groups)
     if not result.get("ok"):
         return fail(
             str(result.get("reason")),
diff --git a/tests/test_manual_groups.py b/tests/test_manual_groups.py
new file mode 100644
index 0000000..2229e19
--- /dev/null
+++ b/tests/test_manual_groups.py
@@ -0,0 +1,87 @@
+"""人工改组（manual_groups）：覆盖贪心匹配、必须整组命中、失败要报出来。"""
+
+from typing import Any
+
+from src.core.matching.runner import _apply_manual_groups
+from src.mcp.tools import analysis
+from src.mcp.tools.analysis import match_payments
+
+
+def _records() -> list[dict[str, Any]]:
+    return [
+        {
+            "_source_file": "支付1.jpg",
+            "card_no": "6282",
+            "card_amount": "100.00",
+            "_matched_invoices": [{"invoice_number": "A1", "_source_file": "发票A.pdf", "total_amount": "100.00"}],
+        },
+        {
+            "_source_file": "支付2.jpg",
+            "card_no": "9999",
+            "card_amount": "50.00",
+            "_matched_invoices": [{"invoice_number": "B1", "_source_file": "发票B.pdf", "total_amount": "50.00"}],
+        },
+    ]
+
+
+def _invoices() -> list[dict[str, Any]]:
+    return [
+        {"invoice_number": "A1", "_source_file": "发票A.pdf", "total_amount": "100.00"},
+        {"invoice_number": "B1", "_source_file": "发票B.pdf", "total_amount": "50.00"},
+    ]
+
+
+def test_manual_group_moves_invoice_and_marks_record() -> None:
+    records = _records()
+    records, applied, gaps = _apply_manual_groups(
+        records, _invoices(), [{"payment": "支付2.jpg", "invoices": ["A1"], "note": "等额票配错"}]
+    )
+    assert gaps == []
+    assert applied and applied[0]["payment"] == "支付2.jpg"
+    second = records[1]
+    assert [x["invoice_number"] for x in second["_matched_invoices"]] == ["B1", "A1"]
+    assert second["remark"] == "manual" and second["manual_note"] == "等额票配错"
+    # A1 已从第一条记录摘掉，不会同时出现在两处
+    assert records[0]["_matched_invoices"] == []
+
+
+def test_unknown_invoice_blocks_whole_group() -> None:
+    records, applied, gaps = _apply_manual_groups(
+        _records(), _invoices(), [{"payment": "支付2.jpg", "invoices": ["A1", "不存在"]}]
+    )
+    assert applied == []
+    assert gaps and "没唯一命中" in gaps[0]
+    # 整组未应用：记录保持原样，不能半套应用
+    assert [x["invoice_number"] for x in records[0]["_matched_invoices"]] == ["A1"]
+    assert "remark" not in records[1]
+
+
+def test_ambiguous_payment_is_reported() -> None:
+    records = _records()
+    records[1]["card_no"] = "6282"  # 两条记录同卡号
+    _, applied, gaps = _apply_manual_groups(records, _invoices(), [{"payment": "6282", "invoices": ["A1"]}])
+    assert applied == [] and "命中 2 条" in gaps[0]
+
+
+def test_tool_passes_manual_groups_through(monkeypatch: Any, tmp_path: Any) -> None:
+    seen: dict[str, Any] = {}
+
+    def fake(case_dir: Any, tolerance: Any = None, manual_groups: Any = None) -> dict[str, Any]:
+        seen["groups"] = manual_groups
+        return {
+            "ok": True,
+            "matched": [],
+            "unmatched_invoices": [],
+            "unmatched_payments": [],
+            "review_required": [],
+            "totals": {},
+            "suggested_invoice_type": "normal",
+            "manual_applied": [],
+            "manual_gaps": [],
+        }
+
+    monkeypatch.setattr(analysis, "match_from_cache", fake)
+    monkeypatch.setattr(analysis._store, "resolve", lambda _cid: tmp_path)
+    groups = [{"payment": "支付1.jpg", "invoices": ["A1"]}]
+    result = match_payments("任意会话", manual_groups=groups)
+    assert result["ok"] is True and seen["groups"] == groups