diff --git a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/mapper/CompanyMapper.java b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/mapper/CompanyMapper.java
index 2e82c2f..9a8c087 100644
--- a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/mapper/CompanyMapper.java
+++ b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/mapper/CompanyMapper.java
@@ -31,4 +31,6 @@ public interface CompanyMapper extends BaseMapper<Company>
     Company selectCompanyByJobId(Long jobId);
 
     List<Company> selectByNames(List<String> list);
+
+    public Company selectByCode(@Param("code") String code);
 }
diff --git a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppUserServiceImpl.java b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppUserServiceImpl.java
index 6601f48..6642ecb 100644
--- a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppUserServiceImpl.java
+++ b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppUserServiceImpl.java
@@ -309,7 +309,7 @@ public class AppUserServiceImpl extends ServiceImpl<AppUserMapper,AppUser> imple
         handleUserTypeSpecificLogic(existingUser, registerBody);
 
         // 5. 系统用户同步（不存在则创建）
-        syncSysUserIfNecessary(existingUser);
+        //syncSysUserIfNecessary(existingUser);
 
         // 6. 一体机密码加密处理
         encryptYtjPassword(existingUser);
@@ -363,6 +363,7 @@ public class AppUserServiceImpl extends ServiceImpl<AppUserMapper,AppUser> imple
         switch (userType) {
             case StringUtil.IS_COMPANY_USER:
                 handleCompanyUserLogic(appUser, registerBody.getCompany());
+                appUser.setIdCard(registerBody.getCompany().getCode());
                 break;
             default:
                 handleJobSeekerUserLogic(appUser, registerBody);
@@ -377,15 +378,22 @@ public class AppUserServiceImpl extends ServiceImpl<AppUserMapper,AppUser> imple
      */
     private void handleCompanyUserLogic(AppUser appUser, Company company) {
         if (company != null) {
-            // 保存企业信息（新增场景）
-            if (company.getCompanyId() == null) {
-                companyMapper.insert(company);
-                // 批量保存企业联系人
-                saveCompanyContacts(company.getCompanyId(), company.getCompanyContactList());
+            Company resultCom=companyMapper.selectByCode(company.getCode());
+            if(resultCom==null){
+                // 保存企业信息（新增场景）
+                if (company.getCompanyId() == null) {
+                    companyMapper.insert(company);
+                    // 批量保存企业联系人
+                    saveCompanyContacts(company.getCompanyId(), company.getCompanyContactList());
+                }
+                // 关联企业信息到用户
+                appUser.setIdCard(company.getCode());
+                appUser.setName(company.getName());
+            }else{
+                company.setCompanyId(resultCom.getCompanyId());
+                companyMapper.updateById(company);
+                saveCompanyContacts(resultCom.getCompanyId(), company.getCompanyContactList());
             }
-            // 关联企业信息到用户
-            appUser.setIdCard(company.getCode());
-            appUser.setName(company.getName());
         }
     }
 
@@ -395,9 +403,31 @@ public class AppUserServiceImpl extends ServiceImpl<AppUserMapper,AppUser> imple
      * @param contactList 联系人列表
      */
     private void saveCompanyContacts(Long companyId, List<CompanyContact> contactList) {
-        if (contactList != null && !contactList.isEmpty()) {
-            contactList.forEach(contact -> contact.setCompanyId(companyId));
-            companyContactMapper.batchInsert(contactList);
+        //查询联系人
+        CompanyContact parm=new CompanyContact();
+        parm.setCompanyId(companyId);
+        List<CompanyContact> existingContacts =companyContactMapper.getSelectList(parm);
+        Set<String> existingContactKeySet = (existingContacts == null || existingContacts.isEmpty())
+                ? new HashSet<>()
+                : existingContacts.stream()
+                .filter(existing -> existing.getContactPerson() != null
+                        && existing.getContactPersonPhone() != null
+                        && existing.getCompanyId() != null)
+                .map(existing -> existing.getContactPerson() + "_" + existing.getContactPersonPhone() + "_" + existing.getCompanyId())
+                .collect(Collectors.toSet());
+        List<CompanyContact> toInsertContactList = contactList.stream()
+                .peek(contact -> contact.setCompanyId(companyId))
+                .filter(contact -> contact.getContactPerson() != null
+                        && contact.getContactPersonPhone() != null
+                        && contact.getCompanyId() != null)
+                .filter(contact -> {
+                    String currentUniqueKey = contact.getContactPerson() + "_" + contact.getContactPersonPhone() + "_" + contact.getCompanyId();
+                    return !existingContactKeySet.contains(currentUniqueKey);
+                })
+                .collect(Collectors.toList());
+
+        if (!toInsertContactList.isEmpty()) {
+            companyContactMapper.batchInsert(toInsertContactList);
         }
     }
 
diff --git a/ruoyi-bussiness/src/main/resources/mapper/app/CompanyMapper.xml b/ruoyi-bussiness/src/main/resources/mapper/app/CompanyMapper.xml
index 1aeeba8..7dd79bf 100644
--- a/ruoyi-bussiness/src/main/resources/mapper/app/CompanyMapper.xml
+++ b/ruoyi-bussiness/src/main/resources/mapper/app/CompanyMapper.xml
@@ -121,4 +121,12 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         </foreach>
     </select>
 
+    <select id="selectByCode" resultType="com.ruoyi.common.core.domain.entity.Company">
+        <include refid="selectCompanyVo"/>
+        <where>  del_flag = '0'
+            <if test="code != null  and code != ''"> AND UPPER(code) = UPPER(#{code})</if>
+        </where>
+        order by create_time desc limit 1
+    </select>
+
 </mapper>
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