diff --git a/bms-back/ruoyi-system/src/main/resources/mapper/ar/ArBillLogMapper.xml b/bms-back/ruoyi-system/src/main/resources/mapper/ar/ArBillLogMapper.xml
index 2fae1bc2..437bd85a 100644
--- a/bms-back/ruoyi-system/src/main/resources/mapper/ar/ArBillLogMapper.xml
+++ b/bms-back/ruoyi-system/src/main/resources/mapper/ar/ArBillLogMapper.xml
@@ -33,6 +33,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
                    when 'EXPORT' then coalesce(e.file_name, b.bill_no)
                    when 'RECEIPT' then r.receipt_no
                    when 'WRITEOFF' then w.writeoff_no
+                   when 'BALANCE_WRITEOFF' then bw.writeoff_no
                    else null
                end as object_display,
                l.from_status, l.to_status, l.before_data, l.after_data, l.operator_id, l.operator_name,
@@ -42,6 +43,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         left join ar_bill_export e on e.export_id = case when l.object_type = 'EXPORT' then cast(l.object_id as unsigned) end
         left join ar_receipt r on r.receipt_id = case when l.object_type = 'RECEIPT' then cast(l.object_id as unsigned) end
         left join ar_receipt_writeoff w on w.writeoff_id = case when l.object_type = 'WRITEOFF' then cast(l.object_id as unsigned) end
+        left join ar_balance_writeoff bw on bw.writeoff_id = case when l.object_type = 'BALANCE_WRITEOFF' then cast(l.object_id as unsigned) end
         <where>
             <if test="arBillId != null">and l.ar_bill_id = #{arBillId}</if>
             <if test="objectType != null and objectType != ''">and l.object_type = #{objectType}</if>
diff --git a/bms-back/sql/ar/ar_bill.sql b/bms-back/sql/ar/ar_bill.sql
index fc963a33..d8918318 100644
--- a/bms-back/sql/ar/ar_bill.sql
+++ b/bms-back/sql/ar/ar_bill.sql
@@ -167,9 +167,9 @@ CREATE TABLE IF NOT EXISTS ar_bill_export (
 CREATE TABLE IF NOT EXISTS ar_bill_log (
   log_id             BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '日志ID',
   ar_bill_id         BIGINT(20) DEFAULT NULL COMMENT '账单ID',
-  object_type        VARCHAR(40) NOT NULL COMMENT 'BILL/RECEIPT/WRITEOFF/EXPORT',
+  object_type        VARCHAR(40) NOT NULL COMMENT 'BILL/RECEIPT/WRITEOFF/EXPORT/BALANCE_WRITEOFF',
   object_id          VARCHAR(64) NOT NULL COMMENT '通用对象ID',
-  operation_type     VARCHAR(40) NOT NULL COMMENT '操作类型',
+  operation_type     VARCHAR(40) NOT NULL COMMENT '操作类型：CONFIRM/VOID/EXPORT/RECEIPT/CANCEL_RECEIPT/WRITEOFF/CANCEL_WRITEOFF/BALANCE_WRITEOFF/CANCEL_BALANCE_WRITEOFF',
   operation_desc     VARCHAR(500) DEFAULT NULL COMMENT '操作说明',
   from_status        VARCHAR(30) DEFAULT NULL COMMENT '变更前状态',
   to_status          VARCHAR(30) DEFAULT NULL COMMENT '变更后状态',
diff --git a/bms-back/sql/ar/ar_bill_log_balance_writeoff_comment.sql b/bms-back/sql/ar/ar_bill_log_balance_writeoff_comment.sql
new file mode 100644
index 00000000..0a11162d
--- /dev/null
+++ b/bms-back/sql/ar/ar_bill_log_balance_writeoff_comment.sql
@@ -0,0 +1,6 @@
+-- 应收日志兼容余额核销：仅更新字段注释，不改变字段类型和历史数据
+ALTER TABLE ar_bill_log
+  MODIFY COLUMN object_type VARCHAR(40) NOT NULL
+    COMMENT 'BILL/RECEIPT/WRITEOFF/EXPORT/BALANCE_WRITEOFF',
+  MODIFY COLUMN operation_type VARCHAR(40) NOT NULL
+    COMMENT '操作类型：CONFIRM/VOID/EXPORT/RECEIPT/CANCEL_RECEIPT/WRITEOFF/CANCEL_WRITEOFF/BALANCE_WRITEOFF/CANCEL_BALANCE_WRITEOFF';
diff --git a/bms-front/src/views/ar/bill/log.vue b/bms-front/src/views/ar/bill/log.vue
index de1162f8..f2319083 100644
--- a/bms-front/src/views/ar/bill/log.vue
+++ b/bms-front/src/views/ar/bill/log.vue
@@ -10,7 +10,7 @@
 import { listArBillLogs } from '@/api/ar/bill'
 const tableRef = ref()
 const searchColumns = [
-  { label: '对象类型', prop: 'objectType', component: 'select', options: [{ label: '应收账单', value: 'BILL' }, { label: '账单导出', value: 'EXPORT' }, { label: '应收收款', value: 'RECEIPT' }, { label: '收款核销', value: 'WRITEOFF' }], width: '130px' },
+  { label: '对象类型', prop: 'objectType', component: 'select', options: [{ label: '应收账单', value: 'BILL' }, { label: '账单导出', value: 'EXPORT' }, { label: '应收收款', value: 'RECEIPT' }, { label: '收款核销', value: 'WRITEOFF' }, { label: '余额核销', value: 'BALANCE_WRITEOFF' }], width: '130px' },
   { label: '操作类型', prop: 'operationType', component: 'input', width: '140px' }, { label: '结果', prop: 'result', component: 'select', options: [{ label: '成功', value: 'SUCCESS' }, { label: '失败', value: 'FAILED' }], width: '120px' }
 ]
 const columns = [
@@ -20,8 +20,8 @@ const columns = [
   { label: '结果', prop: 'result', width: 90, slot: 'result' }, { label: '时间', prop: 'createTime', width: 170, parseTime: true }
 ]
 
-const objectTypeLabels = { BILL: '应收账单', EXPORT: '账单导出', RECEIPT: '应收收款', WRITEOFF: '收款核销' }
-const operationLabels = { CONFIRM: '确认账单', VOID: '作废账单', EXPORT: '导出账单', RECEIPT: '登记收款', CANCEL_RECEIPT: '取消收款', WRITEOFF: '收款核销', CANCEL_WRITEOFF: '取消核销' }
+const objectTypeLabels = { BILL: '应收账单', EXPORT: '账单导出', RECEIPT: '应收收款', WRITEOFF: '收款核销', BALANCE_WRITEOFF: '余额核销' }
+const operationLabels = { CONFIRM: '确认账单', VOID: '作废账单', EXPORT: '导出账单', RECEIPT: '登记收款', CANCEL_RECEIPT: '取消收款', WRITEOFF: '收款核销', CANCEL_WRITEOFF: '取消核销', BALANCE_WRITEOFF: '余额核销', CANCEL_BALANCE_WRITEOFF: '取消余额核销' }
 const statusLabels = { DRAFT: '草稿', CONFIRMED: '已确认', PARTIAL_WRITTEN_OFF: '部分核销', WRITTEN_OFF: '已核销', VOID: '已作废', REGISTERED: '已登记', CANCELLED: '已取消', EFFECTIVE: '有效' }
 function objectTypeText(value) { return objectTypeLabels[value] || value || '-' }
 function operationText(value) { return operationLabels[value] || value || '-' }