diff --git a/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java b/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java
index f7fe7b47..dac4c745 100644
--- a/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java
+++ b/bms-back/bms-system/src/main/java/com/bms/system/service/impl/BmsBizRuleServiceImpl.java
@@ -147,8 +147,8 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
     }
 
     /**
-     * VOL_8000: chargeWeight = max(L*W*H/8000, weightSource).
-     * weightSource RECEIVE_WEIGHT / CHARGE_WEIGHT / VOLUME_WEIGHT.
+     * VOL_8000: chargeWeight = max(L*W*H/8000, volume_weight).
+     * Compare dimensional weight (/8000) with 材积重, not actual weight.
      */
     private BigDecimal resolveVol8000(TmsPriceBillRequest request, BigDecimal systemWeight)
     {
@@ -168,12 +168,12 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
             {
                 continue;
             }
-            BigDecimal other = pickWeight(rule.getWeightSource(), request, systemWeight);
-            if (other == null)
+            BigDecimal volumeWeight = firstPositive(request.getVolumeWeight());
+            if (volumeWeight == null)
             {
                 return dimVol;
             }
-            return other.max(dimVol).setScale(3, RoundingMode.HALF_UP);
+            return volumeWeight.max(dimVol).setScale(3, RoundingMode.HALF_UP);
         }
         return null;
     }
@@ -535,9 +535,13 @@ public class BmsBizRuleServiceImpl implements IBmsBizRuleService
         {
             throw new ServiceException("规则类型不能为空");
         }
+        if (RULE_TYPE_VOL_8000.equalsIgnoreCase(row.getRuleType()) && StringUtils.isEmpty(row.getWeightSource()))
+        {
+            row.setWeightSource(WEIGHT_SOURCE_VOLUME);
+        }
         if (StringUtils.isEmpty(row.getWeightSource()))
         {
-            throw new ServiceException("取值字段不能为空");
+            throw new ServiceException("\u53d6\u503c\u5b57\u6bb5\u4e0d\u80fd\u4e3a\u7a7a");
         }
         if (RULE_TYPE_THREE_SIDE.equalsIgnoreCase(row.getRuleType()) && row.getSideSumMax() == null)
         {
diff --git a/bms-back/sql/data/biz_rule_vol_8000.sql b/bms-back/sql/data/biz_rule_vol_8000.sql
index 6ce35bb0..2abcb5bb 100644
--- a/bms-back/sql/data/biz_rule_vol_8000.sql
+++ b/bms-back/sql/data/biz_rule_vol_8000.sql
@@ -1,10 +1,10 @@
--- VOL_8000: charge_weight = max(L*W*H/8000, weight_source)
+-- VOL_8000: charge_weight = max(L*W*H/8000, volume_weight)
 -- customer_code column stores 对外代码 customer_code_dw (C00222/C00562/C00521/C00805)
 SET NAMES utf8mb4;
 
 INSERT INTO sys_dict_data (dict_sort, dict_label, dict_value, dict_type, css_class, list_class, is_default, status, create_by, create_time, remark)
 SELECT 2, N'材积重8000取大', 'VOL_8000', 'bms_biz_rule_type', '', 'success', 'N', '0', 'admin', sysdate(),
-       N'计费重=max(长×宽×高/8000, 取值字段)'
+       N'计费重=max(长×宽×高/8000, 材积重)'
 FROM DUAL WHERE NOT EXISTS (SELECT 1 FROM sys_dict_data WHERE dict_type = 'bms_biz_rule_type' AND dict_value = 'VOL_8000');
 
 INSERT INTO sys_dict_data (dict_sort, dict_label, dict_value, dict_type, css_class, list_class, is_default, status, create_by, create_time, remark)
@@ -14,8 +14,8 @@ FROM DUAL WHERE NOT EXISTS (SELECT 1 FROM sys_dict_data WHERE dict_type = 'bms_b
 
 -- Seed by 对外代码 (customer_code_dw). Matcher also accepts customer_code.
 INSERT INTO biz_rule (rule_name, rule_type, product_code, country_code, customer_code, weight_min, weight_max, weight_source, side_sum_max, status, remark, create_by, create_time, del_flag)
-SELECT CONCAT(N'对外代码', v.customer_code, N' 材积重8000取大'), 'VOL_8000', NULL, NULL, v.customer_code, NULL, NULL, 'RECEIVE_WEIGHT', NULL, '0',
-       N'客户维度为对外代码customer_code_dw；计费重=max(长×宽×高/8000, 实重)', 'admin', sysdate(), '0'
+SELECT CONCAT(N'对外代码', v.customer_code, N' 材积重8000取大'), 'VOL_8000', NULL, NULL, v.customer_code, NULL, NULL, 'VOLUME_WEIGHT', NULL, '0',
+       N'客户维度为对外代码customer_code_dw；计费重=max(长×宽×高/8000, 材积重)', 'admin', sysdate(), '0'
 FROM (
   SELECT 'C00222' AS customer_code UNION ALL SELECT 'C00562' UNION ALL SELECT 'C00521' UNION ALL SELECT 'C00805'
 ) v
diff --git a/bms-front/src/views/data/rule/config/index.vue b/bms-front/src/views/data/rule/config/index.vue
index 49f19f92..071d5dc9 100644
--- a/bms-front/src/views/data/rule/config/index.vue
+++ b/bms-front/src/views/data/rule/config/index.vue
@@ -110,7 +110,7 @@
           :closable="false"
           show-icon
           style="margin-bottom: 12px"
-          title="计费重 = max(长×宽×高(cm)/8000, 取值字段)；无尺寸时不覆盖"
+          title="计费重 = max(长×宽×高(cm)/8000, 材积重)；无尺寸时不覆盖"
         />
         <el-form-item label="状态" prop="status">
           <el-radio-group v-model="form.status">