diff --git a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java
index 71552f07..d772caf8 100644
--- a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java
+++ b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/QualFilingChangeExecutor.java
@@ -1,5 +1,6 @@
 package org.qinan.safetyeval.app.executor;
 
+import cn.hutool.json.JSONUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
@@ -12,6 +13,7 @@ import org.qinan.safetyeval.client.dto.*;
 import org.qinan.safetyeval.domain.change.gateway.*;
 import org.qinan.safetyeval.domain.change.model.*;
 import org.qinan.safetyeval.domain.constant.*;
+import org.qinan.safetyeval.domain.constant.basic.IndustryEnum;
 import org.qinan.safetyeval.domain.entity.*;
 import org.qinan.safetyeval.domain.exception.BizException;
 import org.qinan.safetyeval.domain.exception.ErrorCode;
@@ -689,170 +691,163 @@ public class QualFilingChangeExecutor implements QualFilingChangeApi {
     private List<QualFilingChangeDetailDO> diffBasicInfo(Long changeId, QualFilingDO exist, QualFilingChangeEntity newEntity) {
         List<QualFilingChangeDetailDO> details = new ArrayList<>();
         // 备案属地编码
-        if (!Objects.equals(exist.getFilingTerritoryCode(), newEntity.getFilingTerritoryCode())) {
+        if (!valueEquals(exist.getFilingTerritoryCode(), newEntity.getFilingTerritoryCode())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "备案属地编码",
                     Objects.toString(exist.getFilingTerritoryCode(), ""),
                     Objects.toString(newEntity.getFilingTerritoryCode(), "")));
         }
         // 备案属地名称
-        if (!Objects.equals(exist.getFilingTerritoryName(), newEntity.getFilingTerritoryName())) {
+        if (!valueEquals(exist.getFilingTerritoryName(), newEntity.getFilingTerritoryName())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "备案属地名称",
                     Objects.toString(exist.getFilingTerritoryName(), ""),
                     Objects.toString(newEntity.getFilingTerritoryName(), "")));
         }
         // 备案单位
-        if (!Objects.equals(exist.getFilingUnitName(), newEntity.getFilingUnitName())) {
+        if (!valueEquals(exist.getFilingUnitName(), newEntity.getFilingUnitName())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "备案单位",
                     Objects.toString(exist.getFilingUnitName(), ""),
                     Objects.toString(newEntity.getFilingUnitName(), "")));
         }
         // 备案单位类型编码
-        if (!Objects.equals(exist.getFilingUnitTypeCode(), newEntity.getFilingUnitTypeCode())) {
+        if (!valueEquals(exist.getFilingUnitTypeCode(), newEntity.getFilingUnitTypeCode())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "备案单位类型编码",
                     Objects.toString(exist.getFilingUnitTypeCode(), ""),
                     Objects.toString(newEntity.getFilingUnitTypeCode(), "")));
         }
         // 备案单位类型名称
-        if (!Objects.equals(exist.getFilingUnitTypeName(), newEntity.getFilingUnitTypeName())) {
+        if (!valueEquals(exist.getFilingUnitTypeName(), newEntity.getFilingUnitTypeName())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "备案单位类型名称",
                     Objects.toString(exist.getFilingUnitTypeName(), ""),
                     Objects.toString(newEntity.getFilingUnitTypeName(), "")));
         }
         // 备案编号
-        if (!Objects.equals(exist.getFilingNo(), newEntity.getFilingNo())) {
+        if (!valueEquals(exist.getFilingNo(), newEntity.getFilingNo())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "备案编号",
                     Objects.toString(exist.getFilingNo(), ""),
                     Objects.toString(newEntity.getFilingNo(), "")));
         }
         // 备案安全评价业务范围
-        String existBusinessScope = exist.getBusinessScope();
-        String newBusinessScope = newEntity.getBusinessScope() != null ? String.join(",", newEntity.getBusinessScope()) : "";
-        if (!Objects.equals(existBusinessScope, newBusinessScope)) {
-            details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
-                    "备案安全评价业务范围",
-                    Objects.toString(existBusinessScope, ""),
-                    newBusinessScope));
-        }
+        diffBusinessScope(changeId, exist.getBusinessScope(), newEntity.getBusinessScope(), details);
         // 注册地址
-        if (!Objects.equals(exist.getRegisterAddress(), newEntity.getRegisterAddress())) {
+        if (!valueEquals(exist.getRegisterAddress(), newEntity.getRegisterAddress())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "注册地址",
                     Objects.toString(exist.getRegisterAddress(), ""),
                     Objects.toString(newEntity.getRegisterAddress(), "")));
         }
         // 办公地址
-        if (!Objects.equals(exist.getOfficeAddress(), newEntity.getOfficeAddress())) {
+        if (!valueEquals(exist.getOfficeAddress(), newEntity.getOfficeAddress())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "办公地址",
                     Objects.toString(exist.getOfficeAddress(), ""),
                     Objects.toString(newEntity.getOfficeAddress(), "")));
         }
         // 统一社会信用代码
-        if (!Objects.equals(exist.getCreditCode(), newEntity.getCreditCode())) {
+        if (!valueEquals(exist.getCreditCode(), newEntity.getCreditCode())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "统一社会信用代码",
                     Objects.toString(exist.getCreditCode(), ""),
                     Objects.toString(newEntity.getCreditCode(), "")));
         }
         // 资质证书编号
-        if (!Objects.equals(exist.getQualCertNo(), newEntity.getQualCertNo())) {
+        if (!valueEquals(exist.getQualCertNo(), newEntity.getQualCertNo())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "资质证书编号",
                     Objects.toString(exist.getQualCertNo(), ""),
                     Objects.toString(newEntity.getQualCertNo(), "")));
         }
         // 法定代表人
-        if (!Objects.equals(exist.getLegalRepresentative(), newEntity.getLegalRepresentative())) {
+        if (!valueEquals(exist.getLegalRepresentative(), newEntity.getLegalRepresentative())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "法定代表人",
                     Objects.toString(exist.getLegalRepresentative(), ""),
                     Objects.toString(newEntity.getLegalRepresentative(), "")));
         }
         // 法人代表及电话
-        if (!Objects.equals(exist.getLegalPersonPhone(), newEntity.getLegalPersonPhone())) {
+        if (!valueEquals(exist.getLegalPersonPhone(), newEntity.getLegalPersonPhone())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "法人代表及电话",
                     Objects.toString(exist.getLegalPersonPhone(), ""),
                     Objects.toString(newEntity.getLegalPersonPhone(), "")));
         }
         // 联系人
-        if (!Objects.equals(exist.getContactName(), newEntity.getContactName())) {
+        if (!valueEquals(exist.getContactName(), newEntity.getContactName())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "联系人",
                     Objects.toString(exist.getContactName(), ""),
                     Objects.toString(newEntity.getContactName(), "")));
         }
         // 联系人及电话
-        if (!Objects.equals(exist.getContactPhone(), newEntity.getContactPhone())) {
+        if (!valueEquals(exist.getContactPhone(), newEntity.getContactPhone())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "联系人及电话",
                     Objects.toString(exist.getContactPhone(), ""),
                     Objects.toString(newEntity.getContactPhone(), "")));
         }
         // 传真
-        if (!Objects.equals(exist.getFax(), newEntity.getFax())) {
+        if (!valueEquals(exist.getFax(), newEntity.getFax())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "传真",
                     Objects.toString(exist.getFax(), ""),
                     Objects.toString(newEntity.getFax(), "")));
         }
         // 信息公开网址
-        if (!Objects.equals(exist.getInfoDisclosureUrl(), newEntity.getInfoDisclosureUrl())) {
+        if (!valueEquals(exist.getInfoDisclosureUrl(), newEntity.getInfoDisclosureUrl())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "信息公开网址",
                     Objects.toString(exist.getInfoDisclosureUrl(), ""),
                     Objects.toString(newEntity.getInfoDisclosureUrl(), "")));
         }
         // 固定资产总值
-        if (!Objects.equals(exist.getFixedAssetAmount(), newEntity.getFixedAssetAmount())) {
+        if (!valueEquals(exist.getFixedAssetAmount(), newEntity.getFixedAssetAmount())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "固定资产总值(单位:分)",
                     Objects.toString(exist.getFixedAssetAmount(), ""),
                     Objects.toString(newEntity.getFixedAssetAmount(), "")));
         }
         // 档案室面积(平方米)
-        if (!Objects.equals(exist.getArchiveRoomArea(), newEntity.getArchiveRoomArea())) {
+        if (!valueEquals(exist.getArchiveRoomArea(), newEntity.getArchiveRoomArea())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "档案室面积(平方米)",
                     Objects.toString(exist.getArchiveRoomArea(), ""),
                     Objects.toString(newEntity.getArchiveRoomArea(), "")));
         }
         // 专职安全评价师数量(人)
-        if (!Objects.equals(exist.getFulltimeEvaluatorCount(), newEntity.getFulltimeEvaluatorCount())) {
+        if (!valueEquals(exist.getFulltimeEvaluatorCount(), newEntity.getFulltimeEvaluatorCount())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "专职安全评价师数量(人)",
                     Objects.toString(exist.getFulltimeEvaluatorCount(), ""),
                     Objects.toString(newEntity.getFulltimeEvaluatorCount(), "")));
         }
         // 注册安全工程师数量(人)
-        if (!Objects.equals(exist.getRegisteredEngineerCount(), newEntity.getRegisteredEngineerCount())) {
+        if (!valueEquals(exist.getRegisteredEngineerCount(), newEntity.getRegisteredEngineerCount())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "注册安全工程师数量(人)",
                     Objects.toString(exist.getRegisteredEngineerCount(), ""),
                     Objects.toString(newEntity.getRegisteredEngineerCount(), "")));
         }
         // 工作场所建筑面积(平方米)
-        if (!bigDecimalEquals(exist.getWorkplaceArea(), newEntity.getWorkplaceArea())) {
+        if (!valueEquals(exist.getWorkplaceArea(), newEntity.getWorkplaceArea())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "工作场所建筑面积(平方米)",
                     Objects.toString(exist.getWorkplaceArea(), ""),
                     Objects.toString(newEntity.getWorkplaceArea(), "")));
         }
         // 单位基本情况介绍
-        if (!Objects.equals(exist.getUnitIntro(), newEntity.getUnitIntro())) {
+        if (!valueEquals(exist.getUnitIntro(), newEntity.getUnitIntro())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "单位基本情况介绍",
                     Objects.toString(exist.getUnitIntro(), ""),
                     Objects.toString(newEntity.getUnitIntro(), "")));
         }
         // 单位基本情况附件地址
-        if (!Objects.equals(exist.getAttachmentUrl(), newEntity.getAttachmentUrl())) {
+        if (!valueEquals(exist.getAttachmentUrl(), newEntity.getAttachmentUrl())) {
             details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
                     "单位基本情况附件地址",
                     Objects.toString(exist.getAttachmentUrl(), ""),
@@ -861,6 +856,44 @@ public class QualFilingChangeExecutor implements QualFilingChangeApi {
         return details;
     }
 
+    /**
+     * 备案安全评价业务范围变更明细（转 Set 比较，忽略顺序与重复；编码转换为行业名称展示）
+     */
+    private void diffBusinessScope(Long changeId, String existScopeJson, List<String> newScope,
+                                   List<QualFilingChangeDetailDO> details) {
+        Set<String> existScopeSet = toIndustryCodeSet(existScopeJson);
+        Set<String> newScopeSet = newScope == null ? new LinkedHashSet<>() : new LinkedHashSet<>(newScope);
+        if (Objects.equals(existScopeSet, newScopeSet)) {
+            return;
+        }
+        details.add(fieldDetail(changeId, QualFilingFormStepEnum.BASIC_INFO, "备案基本信息变更",
+                "备案安全评价业务范围",
+                toIndustryNames(existScopeSet),
+                toIndustryNames(newScopeSet)));
+    }
+
+    /**
+     * 业务范围 JSON 数组字符串转编码集合
+     */
+    private Set<String> toIndustryCodeSet(String scopeJson) {
+        if (!StringUtils.hasText(scopeJson)) {
+            return new LinkedHashSet<>();
+        }
+        return new LinkedHashSet<>(JSONUtil.toList(scopeJson, String.class));
+    }
+
+    /**
+     * 行业编码集合转行业名称，多个以逗号分隔（未匹配到枚举时保留原编码）
+     */
+    private String toIndustryNames(Set<String> codes) {
+        return codes.stream()
+                .map(code -> {
+                    String value = IndustryEnum.getValueByCode(code);
+                    return value != null ? value : code;
+                })
+                .collect(Collectors.joining(","));
+    }
+
     private boolean commitmentChanged(QualFilingCommitmentChangeE exist, QualFilingCommitmentChangeE newEntity) {
         String existSig = exist == null ? "" : exist.getCommitmentContent() + "|" + exist.getLegalRepSignatureUrl()
                                                + "|" + exist.getSignDate() + "|" + exist.getLegalRepPersonnelId() + "|" + exist.getLegalRepName();