diff --git a/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/OrgPersonnelPageQuery.java b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/OrgPersonnelPageQuery.java
index b872db6..5d4c4c8 100644
--- a/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/OrgPersonnelPageQuery.java
+++ b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/OrgPersonnelPageQuery.java
@@ -33,4 +33,7 @@ public class OrgPersonnelPageQuery extends BasePageQuery {
 
     @ApiModelProperty(value = "离职申请审核状态（列表展示，非持久化）")
     private Integer resignAuditStatus;
+
+    @ApiModelProperty(value = "是否员工变更管理页面")
+    private Boolean employeeChange = false;
 }
diff --git a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/exception/ErrorCode.java b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/exception/ErrorCode.java
index a4a29f1..438f3a4 100644
--- a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/exception/ErrorCode.java
+++ b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/exception/ErrorCode.java
@@ -149,6 +149,7 @@ public enum ErrorCode {
     EVAL_PROJECT_MEMBER_NOT_FOUND("06-03-001", "安评项目成员不存在"),
     EVAL_PROJECT_DOC_NOT_FOUND("06-04-001", "安评项目资料不存在"),
     EVAL_CUSTOMER_ORG_MISMATCH("06-01-002", "客户不属于本机构"),
+    EVAL_CUSTOMER_CREDIT_CODE_EXISTS("06-01-003", "统一社会信用代码已存在"),
     EVAL_PERSONNEL_ORG_MISMATCH("06-03-002", "人员不属于本机构"),
     EVAL_PROJECT_NO_GENERATE_FAILED("06-02-002", "项目编号生成失败"),
     EVAL_PROJECT_CANCELLED("06-02-003", "项目已作废不可修改"),
diff --git a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/gateway/EvalCustomerGateway.java b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/gateway/EvalCustomerGateway.java
index 3e77c06..90d9620 100644
--- a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/gateway/EvalCustomerGateway.java
+++ b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/gateway/EvalCustomerGateway.java
@@ -15,4 +15,6 @@ public interface EvalCustomerGateway {
     void delete(Long id);
 
     PageResult<EvalCustomerEntity> page(EvalCustomerQuery query);
+
+    EvalCustomerEntity findByOrgIdAndCreditCode(Long orgId, String creditCode);
 }
diff --git a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalCustomerDomainService.java b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalCustomerDomainService.java
index 17dc4a5..2c201df 100644
--- a/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalCustomerDomainService.java
+++ b/safety-eval-domain/src/main/java/org/qinan/safetyeval/domain/service/EvalCustomerDomainService.java
@@ -9,6 +9,7 @@ import org.qinan.safetyeval.domain.gateway.EvalProjectGateway;
 import org.qinan.safetyeval.domain.query.EvalCustomerQuery;
 import org.qinan.safetyeval.domain.query.PageResult;
 import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
 
 import javax.annotation.Resource;
 
@@ -23,6 +24,7 @@ public class EvalCustomerDomainService {
 
     public EvalCustomerEntity add(EvalCustomerEntity entity) {
         fillDefaultCustomerStatus(entity);
+        assertCreditCodeUnique(entity.getOrgId(), entity.getCreditCode(), null);
         return evalCustomerGateway.save(entity);
     }
 
@@ -42,6 +44,7 @@ public class EvalCustomerDomainService {
         EvalCustomerEntity existing = get(entity.getId());
         fillDefaultCustomerStatus(entity);
         entity.setOrgId(existing.getOrgId());
+        assertCreditCodeUnique(entity.getOrgId(), entity.getCreditCode(), entity.getId());
         return evalCustomerGateway.modify(entity);
     }
 
@@ -62,6 +65,16 @@ public class EvalCustomerDomainService {
         return customer;
     }
 
+    private void assertCreditCodeUnique(Long orgId, String creditCode, Long excludeId) {
+        if (!StringUtils.hasText(creditCode)) {
+            return;
+        }
+        EvalCustomerEntity found = evalCustomerGateway.findByOrgIdAndCreditCode(orgId, creditCode);
+        if (found != null && (excludeId == null || !excludeId.equals(found.getId()))) {
+            throw new BizException(ErrorCode.EVAL_CUSTOMER_CREDIT_CODE_EXISTS);
+        }
+    }
+
     private void fillDefaultCustomerStatus(EvalCustomerEntity entity) {
         if (entity.getCustomerStatusCode() == null) {
             entity.setCustomerStatusCode(CustomerStatusEnum.NORMAL.getCode());
diff --git a/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/gatewayimpl/EvalCustomerGatewayImpl.java b/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/gatewayimpl/EvalCustomerGatewayImpl.java
index 0ac96ee..2c42e7a 100644
--- a/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/gatewayimpl/EvalCustomerGatewayImpl.java
+++ b/safety-eval-infrastructure/src/main/java/org/qinan/safetyeval/infrastructure/gatewayimpl/EvalCustomerGatewayImpl.java
@@ -75,6 +75,20 @@ public class EvalCustomerGatewayImpl implements EvalCustomerGateway {
         return PageResult.of(entities, result.getTotal(), result.getCurrent(), result.getSize());
     }
 
+    @Override
+    public EvalCustomerEntity findByOrgIdAndCreditCode(Long orgId, String creditCode) {
+        if (orgId == null || !StringUtils.hasText(creditCode)) {
+            return null;
+        }
+        LambdaQueryWrapper<EvalCustomerDO> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(EvalCustomerDO::getDeleteEnum, "false")
+                .eq(EvalCustomerDO::getOrgId, orgId)
+                .eq(EvalCustomerDO::getCreditCode, creditCode.trim())
+                .last("LIMIT 1");
+        EvalCustomerDO dataObject = evalCustomerMapper.selectOne(wrapper);
+        return dataObject == null ? null : evalCustomerDoConvertor.convertDoToE(dataObject);
+    }
+
     private LambdaQueryWrapper<EvalCustomerDO> buildQueryWrapper(EvalCustomerQuery query) {
         LambdaQueryWrapper<EvalCustomerDO> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(EvalCustomerDO::getDeleteEnum, "false");