diff --git a/bms-back/bms-system/src/main/java/com/bms/price/migration/mapper/UuidToNewSyncMapper.java b/bms-back/bms-system/src/main/java/com/bms/price/migration/mapper/UuidToNewSyncMapper.java
index a86494a3..b4685735 100644
--- a/bms-back/bms-system/src/main/java/com/bms/price/migration/mapper/UuidToNewSyncMapper.java
+++ b/bms-back/bms-system/src/main/java/com/bms/price/migration/mapper/UuidToNewSyncMapper.java
@@ -8,7 +8,7 @@ import com.bms.price.migration.domain.UuidToNewIdHolder;
 import com.bms.price.migration.domain.UuidToNewProgressVo;
 
 /**
- * UUID -> bigint 阴影同步 Mapper（订单+income *_new + 关联表 order_id）
+ * UUID -> bigint 阴影同步 Mapper（订单+income *_new + order_id / income_fee_id）
  */
 public interface UuidToNewSyncMapper
 {
@@ -39,6 +39,9 @@ public interface UuidToNewSyncMapper
 
     int insertIncomeFeeNew(UuidToNewIdHolder holder);
 
+    /** 回写 ar_bill_detail_fee.income_fee_id（= prc_income_bill_fee_new.fee_id） */
+    int updateArDetailFeeIncomeFeeId(@Param("oldFeeId") String oldFeeId, @Param("newFeeId") Long newFeeId);
+
     /** 回写现网关联表 order_id（= prc_order_bill_new.bill_id） */
 
     int updatePayBillOrderId(@Param("oldBillId") String oldBillId, @Param("newBillId") Long newBillId);
diff --git a/bms-back/bms-system/src/main/java/com/bms/price/migration/service/impl/UuidToNewSyncServiceImpl.java b/bms-back/bms-system/src/main/java/com/bms/price/migration/service/impl/UuidToNewSyncServiceImpl.java
index 6ec92d74..bdb91ceb 100644
--- a/bms-back/bms-system/src/main/java/com/bms/price/migration/service/impl/UuidToNewSyncServiceImpl.java
+++ b/bms-back/bms-system/src/main/java/com/bms/price/migration/service/impl/UuidToNewSyncServiceImpl.java
@@ -351,10 +351,13 @@ public class UuidToNewSyncServiceImpl implements IUuidToNewSyncService
             h.setNewBillId(newBillId);
             h.setNewIncomeId(newIncomeId);
             syncMapper.insertIncomeFeeNew(h);
-            if (h.getNewId() == null)
+            Long newFeeId = h.getNewId();
+            if (newFeeId == null)
             {
                 throw new IllegalStateException("insert income_fee_new no id for " + row.getFeeId());
             }
+            // 回写现网 AR 费用行：旧 UUID 列不动，income_fee_id=新 fee_id
+            syncMapper.updateArDetailFeeIncomeFeeId(row.getFeeId(), newFeeId);
         }
     }
 
diff --git a/bms-back/bms-system/src/main/resources/mapper/price/UuidToNewSyncMapper.xml b/bms-back/bms-system/src/main/resources/mapper/price/UuidToNewSyncMapper.xml
index a1d9a8f0..e3511635 100644
--- a/bms-back/bms-system/src/main/resources/mapper/price/UuidToNewSyncMapper.xml
+++ b/bms-back/bms-system/src/main/resources/mapper/price/UuidToNewSyncMapper.xml
@@ -234,6 +234,12 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         where f.fee_id = #{oldId}
     </insert>
 
+    <update id="updateArDetailFeeIncomeFeeId">
+        update ar_bill_detail_fee
+           set income_fee_id = #{newFeeId}
+         where prc_income_bill_fee_id = #{oldFeeId}
+    </update>
+
     <!-- 现网关联表回写 order_id（旧 UUID 列不动） -->
 
     <update id="updatePayBillOrderId">
diff --git a/bms-back/sql/uuid_to_bi_shadow/20261114_uuid_to_bi_shadow_dev.md b/bms-back/sql/uuid_to_bi_shadow/20261114_uuid_to_bi_shadow_dev.md
index 25288f40..ad2ec12d 100644
--- a/bms-back/sql/uuid_to_bi_shadow/20261114_uuid_to_bi_shadow_dev.md
+++ b/bms-back/sql/uuid_to_bi_shadow/20261114_uuid_to_bi_shadow_dev.md
@@ -45,7 +45,7 @@
 | `prc_income_bill` | `prc_income_bill_new` | `income_bill_id` -> bigint AI；`bill_id`=新订单 |
 | `prc_income_bill_fee` | `prc_income_bill_fee_new` | `fee_id` -> bigint AI；`income_bill_id`=新主表 |
 
-### 3.2 现网表增加 `order_id`（income 现网表不加，甠 *_new）
+### 3.2 现网表补列（income 现网表不加 order_id，甠 *_new）
 
 | 表 | 用哪列定位旧订单 | 新列 |
 |---|---|---|
@@ -55,10 +55,11 @@
 | `pay_bill_line` | `order_bill_id` varchar36 | `order_id` bigint |
 | `prc_billing_task` | `bill_id` varchar36 | `order_id` bigint |
 | `ar_bill_generate_task` | `last_source_bill_id` varchar36 | `order_id` bigint |
+| `ar_bill_detail_fee` | `prc_income_bill_fee_id` varchar36 | `income_fee_id` bigint（= `prc_income_bill_fee_new.fee_id`） |
 
 说明：
 
-- `ar_bill_detail_fee` **不直接**挂订单，本期**不加** `order_id`（可经 `detail` 关联）。  
+- `ar_bill_detail_fee` **不加** `order_id`（可经 `detail.order_id`）；改加 `income_fee_id` 映射新费用 ID。  
 - `order_id` 允许 NULL；未同步订单为 NULL。  
 - 建议索引：`KEY idx_<table>_order_id (order_id)`。
 
@@ -100,9 +101,9 @@
 3) UPDATE mig_bi_order_done -> SUCCESS + new_bill_id
 4) INSERT prc_order_bill_ext_new (bill_id = new_bill_id)
 5) INSERT prc_income_bill_new / prc_income_bill_fee_new（income/fee UUID -> bigint）
-6) UPDATE 关联表 order_id = new_bill_id
-     WHERE 旧 UUID 列 = old_bill_id
-7) return SUCCESS
+6) UPDATE ar_bill_detail_fee.income_fee_id = 新 fee_id
+7) UPDATE 关联表 order_id = new_bill_id
+8) return SUCCESS
 ```
 
 不再：拷贝 pay/AR/billing 到 `*_new`。
@@ -116,7 +117,7 @@ flowchart TD
   C -->|是| D[空转睡眠]
   C -->|否| E[逐单事务]
   E --> F[INSERT order/ext/income *_new]
-  F --> G[UPDATE 各表 order_id]
+  F --> G[UPDATE income_fee_id / order_id]
   G --> H[mig_bi_order_done SUCCESS]
   H --> I[下一单/下一批]
   D --> A
diff --git a/bms-back/sql/uuid_to_bi_shadow/20261115_add_ar_detail_fee_income_fee_id.sql b/bms-back/sql/uuid_to_bi_shadow/20261115_add_ar_detail_fee_income_fee_id.sql
new file mode 100644
index 00000000..e5ad5a39
--- /dev/null
+++ b/bms-back/sql/uuid_to_bi_shadow/20261115_add_ar_detail_fee_income_fee_id.sql
@@ -0,0 +1,26 @@
+-- 方案文档：20261114_uuid_to_bi_shadow_dev.md
+-- 适用：已执行过 20261115_uuid_order_id_scheme.sql、仅缺 income_fee_id 时
+-- 可重入（列已存在则跳过）
+
+SET NAMES utf8mb4;
+
+DROP PROCEDURE IF EXISTS `mig_add_income_fee_id_col`;
+DELIMITER $$
+CREATE PROCEDURE `mig_add_income_fee_id_col`()
+BEGIN
+  DECLARE cnt INT DEFAULT 0;
+  SELECT COUNT(*) INTO cnt
+    FROM information_schema.columns
+   WHERE table_schema = DATABASE()
+     AND table_name = 'ar_bill_detail_fee'
+     AND column_name = 'income_fee_id';
+  IF cnt = 0 THEN
+    ALTER TABLE `ar_bill_detail_fee`
+      ADD COLUMN `income_fee_id` bigint DEFAULT NULL COMMENT '对应 prc_income_bill_fee_new.fee_id' AFTER `prc_income_bill_fee_id`,
+      ADD KEY `idx_ar_detail_fee_income_fee_id` (`income_fee_id`);
+  END IF;
+END$$
+DELIMITER ;
+
+CALL mig_add_income_fee_id_col();
+DROP PROCEDURE IF EXISTS `mig_add_income_fee_id_col`;
diff --git a/bms-back/sql/uuid_to_bi_shadow/20261115_uuid_order_id_scheme.sql b/bms-back/sql/uuid_to_bi_shadow/20261115_uuid_order_id_scheme.sql
index 014be380..0728f722 100644
--- a/bms-back/sql/uuid_to_bi_shadow/20261115_uuid_order_id_scheme.sql
+++ b/bms-back/sql/uuid_to_bi_shadow/20261115_uuid_order_id_scheme.sql
@@ -1,5 +1,5 @@
 -- 方案文档：20261114_uuid_to_bi_shadow_dev.md
--- order_id 方案：删除多余 *_new（保留订单/收入）；关联表增加 order_id（对应 prc_order_bill_new.bill_id）
+-- order_id 方案：删除多余 *_new（保留订单/收入）；关联表增加 order_id； ar_bill_detail_fee 增加 income_fee_id
 -- 可重入（列已存在则跳过）
 -- 注意：会改生产/测试库现网表结构（仅增列，不改旧 UUID 列）
 
@@ -100,6 +100,28 @@ CALL mig_add_order_id_col('ar_bill_generate_task', 'last_source_bill_id', '对
 
 DROP PROCEDURE IF EXISTS `mig_add_order_id_col`;
 
+-- ========== 3. ar_bill_detail_fee 增加 income_fee_id（= prc_income_bill_fee_new.fee_id） ==========
+DROP PROCEDURE IF EXISTS `mig_add_income_fee_id_col`;
+DELIMITER $$
+CREATE PROCEDURE `mig_add_income_fee_id_col`()
+BEGIN
+  DECLARE cnt INT DEFAULT 0;
+  SELECT COUNT(*) INTO cnt
+    FROM information_schema.columns
+   WHERE table_schema = DATABASE()
+     AND table_name = 'ar_bill_detail_fee'
+     AND column_name = 'income_fee_id';
+  IF cnt = 0 THEN
+    ALTER TABLE `ar_bill_detail_fee`
+      ADD COLUMN `income_fee_id` bigint DEFAULT NULL COMMENT '对应 prc_income_bill_fee_new.fee_id' AFTER `prc_income_bill_fee_id`,
+      ADD KEY `idx_ar_detail_fee_income_fee_id` (`income_fee_id`);
+  END IF;
+END$$
+DELIMITER ;
+
+CALL mig_add_income_fee_id_col();
+DROP PROCEDURE IF EXISTS `mig_add_income_fee_id_col`;
+
 -- 说明：同步一单成功后更新（旧 UUID 列不动）：
 --   UPDATE prc_pay_bill         SET order_id=#{new} WHERE bill_id=#{oldUuid};
 --   UPDATE prc_pay_bill_fee     SET order_id=#{new} WHERE bill_id=#{oldUuid};
@@ -107,3 +129,4 @@ DROP PROCEDURE IF EXISTS `mig_add_order_id_col`;
 --   UPDATE pay_bill_line        SET order_id=#{new} WHERE order_bill_id=#{oldUuid};
 --   UPDATE prc_billing_task     SET order_id=#{new} WHERE bill_id=#{oldUuid};
 --   UPDATE ar_bill_generate_task SET order_id=#{new} WHERE last_source_bill_id=#{oldUuid};
+--   UPDATE ar_bill_detail_fee SET income_fee_id=#{newFeeId} WHERE prc_income_bill_fee_id=#{oldFeeUuid};