diff --git a/docs/接口/旧规则绑定表下线观察与删表草案.md b/docs/接口/旧规则绑定表下线观察与删表草案.md
new file mode 100644
index 0000000..192d21c
--- /dev/null
+++ b/docs/接口/旧规则绑定表下线观察与删表草案.md
@@ -0,0 +1,73 @@
+# 旧规则绑定表下线观察与删表草案
+
+## 当前策略
+
+- 新主链路：`leaudit_rule_group_bindings`
+- 旧兼容表：`leaudit_rule_type_bindings`
+- 当前仅保留 `UpdateBinding / DeleteBinding` 对历史 `BindingId` 的 fallback
+
+## 已完成
+
+- 文档类型保存不再双写旧表
+- `CreateBinding` 不再 fallback 写旧表
+- 规则绑定主读链路优先读取新分组绑定
+
+## 观察期要看什么
+
+### 1. 后端日志
+
+当前已经在以下场景增加明确日志：
+
+- `rule binding legacy fallback hit on update`
+- `rule binding legacy fallback hit on delete`
+
+如果观察期内不再出现以上日志，说明已经基本没有历史旧 `BindingId` 命中。
+
+### 2. 数据检查
+
+执行：
+
+```bash
+psql ... -f scripts/precheck_drop_legacy_rule_type_bindings.sql
+```
+
+重点看：
+
+- `doc_types_legacy_only = 0`
+- 新链路绑定明细完整
+- 旧表活动绑定仅剩历史冗余数据
+
+## 建议收口顺序
+
+1. 保持现状进入观察期
+2. 连续一段时间无 fallback 日志
+3. 删除 `UpdateBinding / DeleteBinding` 的旧表 fallback
+4. 再执行删表 SQL
+
+## 删表前条件
+
+- 前端主链路全部走评查点分组绑定接口
+- 不再有外部脚本调用旧 `/api/rule-sets/bindings/{bindingId}` 历史 ID
+- 观察期日志为 0
+- `doc_types_legacy_only = 0`
+
+## 删表 SQL 草案
+
+```sql
+BEGIN;
+
+DROP TABLE IF EXISTS leaudit_rule_type_bindings;
+
+COMMIT;
+```
+
+## 回滚草案
+
+如果只是删 fallback 代码但还没删表，直接回滚代码即可。
+
+如果已经删表，必须依赖：
+
+- 事先数据库备份
+- 或按历史 DDL 重建表结构后再回灌数据
+
+因此删表动作必须放在数据库备份之后执行。
diff --git a/fastapi_modules/fastapi_leaudit/services/impl/ruleServiceImpl.py b/fastapi_modules/fastapi_leaudit/services/impl/ruleServiceImpl.py
index 4268301..361f69e 100644
--- a/fastapi_modules/fastapi_leaudit/services/impl/ruleServiceImpl.py
+++ b/fastapi_modules/fastapi_leaudit/services/impl/ruleServiceImpl.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import hashlib
+import logging
 from fastapi_common.fastapi_common_sqlalchemy.database import GetAsyncSession
 from fastapi_common.fastapi_common_web.domain.responses import StatusCodeEnum
 from fastapi_common.fastapi_common_web.exception.LeauditException import LeauditException
@@ -21,6 +22,8 @@ from fastapi_modules.fastapi_leaudit.services import IOssService, IRuleService
 from fastapi_modules.fastapi_leaudit.services.impl.ossServiceImpl import OssServiceImpl
 from fastapi_modules.fastapi_leaudit.services.impl.ruleGroupSupport import sync_doc_type_bindings_from_group
 
+LOGGER = logging.getLogger(__name__)
+
 
 class RuleServiceImpl(IRuleService):
     """规则服务实现。"""
@@ -756,6 +759,13 @@ class RuleServiceImpl(IRuleService):
             if not Row:
                 raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "绑定记录不存在")
 
+            LOGGER.warning(
+                "rule binding legacy fallback hit on update: binding_id=%s doc_type_id=%s rule_set_id=%s",
+                BindingId,
+                Row.get("doc_type_id"),
+                Row.get("rule_set_id"),
+            )
+
             SetClauses: list[str] = []
             Params: dict[str, object] = {"bid": BindingId}
 
@@ -838,6 +848,11 @@ class RuleServiceImpl(IRuleService):
                 text("DELETE FROM leaudit_rule_type_bindings WHERE id = :bid"),
                 {"bid": BindingId},
             )
+            if Result.rowcount:
+                LOGGER.warning(
+                    "rule binding legacy fallback hit on delete: binding_id=%s",
+                    BindingId,
+                )
             await Session.commit()
             if Result.rowcount == 0:
                 raise LeauditException(StatusCodeEnum.HTTP_404_NOT_FOUND, "绑定记录不存在")
diff --git a/scripts/precheck_drop_legacy_rule_type_bindings.sql b/scripts/precheck_drop_legacy_rule_type_bindings.sql
new file mode 100644
index 0000000..cb99588
--- /dev/null
+++ b/scripts/precheck_drop_legacy_rule_type_bindings.sql
@@ -0,0 +1,78 @@
+-- 删除 leaudit_rule_type_bindings 前的检查 SQL（仅检查，不执行删除）
+-- 使用方式：
+--   psql ... -f scripts/precheck_drop_legacy_rule_type_bindings.sql
+
+\echo '=== 1. 文档类型总量 / 新旧绑定覆盖情况 ==='
+WITH doc_types AS (
+    SELECT id
+    FROM leaudit_document_types
+    WHERE deleted_at IS NULL
+),
+new_bindings AS (
+    SELECT DISTINCT child.document_type_id
+    FROM leaudit_evaluation_point_groups child
+    JOIN leaudit_rule_group_bindings rgb
+      ON rgb.group_id = child.id
+     AND rgb.deleted_at IS NULL
+     AND rgb.is_active = TRUE
+    WHERE child.deleted_at IS NULL
+      AND COALESCE(child.pid, 0) <> 0
+      AND child.document_type_id IS NOT NULL
+),
+legacy_bindings AS (
+    SELECT DISTINCT doc_type_id
+    FROM leaudit_rule_type_bindings
+    WHERE deleted_at IS NULL
+      AND is_active = TRUE
+)
+SELECT
+    (SELECT COUNT(*) FROM doc_types) AS doc_types_total,
+    (SELECT COUNT(*) FROM new_bindings) AS doc_types_with_new_binding,
+    (SELECT COUNT(*) FROM legacy_bindings) AS doc_types_with_legacy_binding,
+    (
+        SELECT COUNT(*)
+        FROM legacy_bindings lb
+        WHERE NOT EXISTS (
+            SELECT 1
+            FROM new_bindings nb
+            WHERE nb.document_type_id = lb.doc_type_id
+        )
+    ) AS doc_types_legacy_only;
+
+\echo '=== 2. 仍可能依赖旧表的活动绑定明细 ==='
+SELECT
+    b.id,
+    b.doc_type_id,
+    b.doc_type_code,
+    b.rule_set_id,
+    b.binding_mode,
+    b.priority,
+    b.region,
+    b.note
+FROM leaudit_rule_type_bindings b
+WHERE b.deleted_at IS NULL
+  AND b.is_active = TRUE
+ORDER BY b.doc_type_id ASC, b.priority DESC, b.id ASC;
+
+\echo '=== 3. 新链路活动绑定明细 ==='
+SELECT
+    rgb.id AS group_binding_id,
+    child.id AS child_group_id,
+    child.document_type_id,
+    rgb.rule_set_id,
+    rgb.priority,
+    rgb.is_active,
+    rgb.note
+FROM leaudit_rule_group_bindings rgb
+JOIN leaudit_evaluation_point_groups child
+  ON child.id = rgb.group_id
+WHERE rgb.deleted_at IS NULL
+  AND rgb.is_active = TRUE
+  AND child.deleted_at IS NULL
+  AND COALESCE(child.pid, 0) <> 0
+ORDER BY child.document_type_id ASC, child.sort_order ASC, rgb.priority DESC, rgb.id ASC;
+
+\echo '=== 4. 删除前必须人工确认 ==='
+\echo '1) 观察期内未再出现 legacy fallback update/delete 日志'
+\echo '2) doc_types_legacy_only = 0'
+\echo '3) 前端/脚本/外部调用不再使用 /api/rule-sets/bindings 历史 BindingId'