diff --git a/ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/ICcdiIntermediaryService.java b/ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/ICcdiIntermediaryService.java
new file mode 100644
index 0000000..a359c0b
--- /dev/null
+++ b/ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/ICcdiIntermediaryService.java
@@ -0,0 +1,117 @@
+package com.ruoyi.ccdi.service;
+
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.ruoyi.ccdi.domain.dto.*;
+import com.ruoyi.ccdi.domain.vo.CcdiIntermediaryEntityDetailVO;
+import com.ruoyi.ccdi.domain.vo.CcdiIntermediaryPersonDetailVO;
+import com.ruoyi.ccdi.domain.vo.CcdiIntermediaryVO;
+
+/**
+ * 中介Service接口
+ *
+ * @author ruoyi
+ * @date 2026-02-04
+ */
+public interface ICcdiIntermediaryService {
+
+    /**
+     * 分页查询中介列表
+     *
+     * @param page     分页对象
+     * @param queryDTO 查询条件
+     * @return 中介VO分页结果
+     */
+    Page<CcdiIntermediaryVO> selectIntermediaryPage(Page<CcdiIntermediaryVO> page, CcdiIntermediaryQueryDTO queryDTO);
+
+    /**
+     * 查询个人中介详情
+     *
+     * @param bizId 人员ID
+     * @return 个人中介详情VO
+     */
+    CcdiIntermediaryPersonDetailVO selectIntermediaryPersonDetail(String bizId);
+
+    /**
+     * 查询实体中介详情
+     *
+     * @param socialCreditCode 统一社会信用代码
+     * @return 实体中介详情VO
+     */
+    CcdiIntermediaryEntityDetailVO selectIntermediaryEntityDetail(String socialCreditCode);
+
+    /**
+     * 新增个人中介
+     *
+     * @param addDTO 新增DTO
+     * @return 结果
+     */
+    int insertIntermediaryPerson(CcdiIntermediaryPersonAddDTO addDTO);
+
+    /**
+     * 修改个人中介
+     *
+     * @param editDTO 编辑DTO
+     * @return 结果
+     */
+    int updateIntermediaryPerson(CcdiIntermediaryPersonEditDTO editDTO);
+
+    /**
+     * 新增实体中介
+     *
+     * @param addDTO 新增DTO
+     * @return 结果
+     */
+    int insertIntermediaryEntity(CcdiIntermediaryEntityAddDTO addDTO);
+
+    /**
+     * 修改实体中介
+     *
+     * @param editDTO 编辑DTO
+     * @return 结果
+     */
+    int updateIntermediaryEntity(CcdiIntermediaryEntityEditDTO editDTO);
+
+    /**
+     * 批量删除中介
+     *
+     * @param ids 需要删除的ID数组
+     * @return 结果
+     */
+    int deleteIntermediaryByIds(String[] ids);
+
+    /**
+     * 校验人员ID唯一性
+     *
+     * @param personId 人员ID
+     * @param bizId    排除的人员ID
+     * @return true=唯一, false=不唯一
+     */
+    boolean checkPersonIdUnique(String personId, String bizId);
+
+    /**
+     * 校验统一社会信用代码唯一性
+     *
+     * @param socialCreditCode 统一社会信用代码
+     * @param excludeId        排除的ID
+     * @return true=唯一, false=不唯一
+     */
+    boolean checkSocialCreditCodeUnique(String socialCreditCode, String excludeId);
+
+    /**
+     * 导入个人中介数据
+     *
+     * @param list          Excel实体列表
+     * @param updateSupport 是否更新支持
+     * @return 结果
+     */
+    String importIntermediaryPerson(java.util.List<com.ruoyi.ccdi.domain.excel.CcdiIntermediaryPersonExcel> list, boolean updateSupport);
+
+    /**
+     * 导入实体中介数据
+     *
+     * @param list          Excel实体列表
+     * @param updateSupport 是否更新支持
+     * @return 结果
+     */
+    String importIntermediaryEntity(java.util.List<com.ruoyi.ccdi.domain.excel.CcdiIntermediaryEntityExcel> list, boolean updateSupport);
+}
diff --git a/ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/impl/CcdiIntermediaryServiceImpl.java b/ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/impl/CcdiIntermediaryServiceImpl.java
new file mode 100644
index 0000000..82413e0
--- /dev/null
+++ b/ruoyi-ccdi/src/main/java/com/ruoyi/ccdi/service/impl/CcdiIntermediaryServiceImpl.java
@@ -0,0 +1,424 @@
+package com.ruoyi.ccdi.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.ruoyi.ccdi.domain.CcdiBizIntermediary;
+import com.ruoyi.ccdi.domain.CcdiEnterpriseBaseInfo;
+import com.ruoyi.ccdi.domain.dto.CcdiIntermediaryEntityAddDTO;
+import com.ruoyi.ccdi.domain.dto.CcdiIntermediaryEntityEditDTO;
+import com.ruoyi.ccdi.domain.dto.CcdiIntermediaryPersonAddDTO;
+import com.ruoyi.ccdi.domain.dto.CcdiIntermediaryPersonEditDTO;
+import com.ruoyi.ccdi.domain.dto.CcdiIntermediaryQueryDTO;
+import com.ruoyi.ccdi.domain.excel.CcdiIntermediaryEntityExcel;
+import com.ruoyi.ccdi.domain.excel.CcdiIntermediaryPersonExcel;
+import com.ruoyi.ccdi.domain.vo.CcdiIntermediaryEntityDetailVO;
+import com.ruoyi.ccdi.domain.vo.CcdiIntermediaryPersonDetailVO;
+import com.ruoyi.ccdi.domain.vo.CcdiIntermediaryVO;
+import com.ruoyi.ccdi.mapper.CcdiBizIntermediaryMapper;
+import com.ruoyi.ccdi.mapper.CcdiEnterpriseBaseInfoMapper;
+import com.ruoyi.ccdi.service.ICcdiIntermediaryService;
+import com.ruoyi.common.utils.StringUtils;
+import jakarta.annotation.Resource;
+import org.springframework.beans.BeanUtils;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 中介Service业务层处理
+ *
+ * @author ruoyi
+ * @date 2026-02-04
+ */
+@Service
+public class CcdiIntermediaryServiceImpl implements ICcdiIntermediaryService {
+
+    @Resource
+    private CcdiBizIntermediaryMapper bizIntermediaryMapper;
+
+    @Resource
+    private CcdiEnterpriseBaseInfoMapper enterpriseBaseInfoMapper;
+
+    /**
+     * 分页查询中介列表
+     *
+     * @param page     分页对象
+     * @param queryDTO 查询条件
+     * @return 中介VO分页结果
+     */
+    @Override
+    public Page<CcdiIntermediaryVO> selectIntermediaryPage(Page<CcdiIntermediaryVO> page, CcdiIntermediaryQueryDTO queryDTO) {
+        Page<CcdiIntermediaryVO> voPage = new Page<>(page.getCurrent(), page.getSize());
+        List<CcdiIntermediaryVO> list = new ArrayList<>();
+
+        // 查询个人中介
+        LambdaQueryWrapper<CcdiBizIntermediary> personWrapper = new LambdaQueryWrapper<>();
+        personWrapper.like(StringUtils.isNotEmpty(queryDTO.getName()), CcdiBizIntermediary::getName, queryDTO.getName())
+                .like(StringUtils.isNotEmpty(queryDTO.getCertificateNo()), CcdiBizIntermediary::getPersonId, queryDTO.getCertificateNo())
+                .eq(StringUtils.isNotEmpty(queryDTO.getIntermediaryType()), CcdiBizIntermediary::getIntermediaryType, queryDTO.getIntermediaryType())
+                .or()
+                .eq(StringUtils.isEmpty(queryDTO.getIntermediaryType()) || "1".equals(queryDTO.getIntermediaryType()),
+                        CcdiBizIntermediary::getIntermediaryType, "1");
+
+        List<CcdiBizIntermediary> personList = bizIntermediaryMapper.selectList(personWrapper);
+        for (CcdiBizIntermediary person : personList) {
+            CcdiIntermediaryVO vo = new CcdiIntermediaryVO();
+            vo.setId(person.getBizId());
+            vo.setName(person.getName());
+            vo.setCertificateNo(person.getPersonId());
+            vo.setIntermediaryType("1");
+            vo.setPersonType(person.getPersonType());
+            vo.setCompany(person.getCompany());
+            vo.setDataSource(person.getDataSource());
+            vo.setCreateTime(person.getCreateTime());
+            list.add(vo);
+        }
+
+        // 查询实体中介
+        LambdaQueryWrapper<CcdiEnterpriseBaseInfo> entityWrapper = new LambdaQueryWrapper<>();
+        entityWrapper.like(StringUtils.isNotEmpty(queryDTO.getName()), CcdiEnterpriseBaseInfo::getEnterpriseName, queryDTO.getName())
+                .like(StringUtils.isNotEmpty(queryDTO.getCertificateNo()), CcdiEnterpriseBaseInfo::getSocialCreditCode, queryDTO.getCertificateNo())
+                .eq(StringUtils.isNotEmpty(queryDTO.getIntermediaryType()), CcdiEnterpriseBaseInfo::getIntermediaryType, queryDTO.getIntermediaryType())
+                .or()
+                .eq(StringUtils.isEmpty(queryDTO.getIntermediaryType()) || "2".equals(queryDTO.getIntermediaryType()),
+                        CcdiEnterpriseBaseInfo::getIntermediaryType, "2");
+
+        List<CcdiEnterpriseBaseInfo> entityList = enterpriseBaseInfoMapper.selectList(entityWrapper);
+        for (CcdiEnterpriseBaseInfo entity : entityList) {
+            CcdiIntermediaryVO vo = new CcdiIntermediaryVO();
+            vo.setId(entity.getSocialCreditCode());
+            vo.setName(entity.getEnterpriseName());
+            vo.setCertificateNo(entity.getSocialCreditCode());
+            vo.setIntermediaryType("2");
+            vo.setDataSource(entity.getDataSource());
+            vo.setCreateTime(entity.getCreateTime());
+            list.add(vo);
+        }
+
+        // 手动分页
+        int start = (int) ((voPage.getCurrent() - 1) * voPage.getSize());
+        int end = (int) Math.min(start + voPage.getSize(), list.size());
+
+        List<CcdiIntermediaryVO> pageList = new ArrayList<>();
+        if (start < list.size()) {
+            pageList = list.subList(start, end);
+        }
+
+        voPage.setRecords(pageList);
+        voPage.setTotal(list.size());
+
+        return voPage;
+    }
+
+    /**
+     * 查询个人中介详情
+     *
+     * @param bizId 人员ID
+     * @return 个人中介详情VO
+     */
+    @Override
+    public CcdiIntermediaryPersonDetailVO selectIntermediaryPersonDetail(String bizId) {
+        CcdiBizIntermediary person = bizIntermediaryMapper.selectById(bizId);
+        if (person == null) {
+            return null;
+        }
+
+        CcdiIntermediaryPersonDetailVO vo = new CcdiIntermediaryPersonDetailVO();
+        BeanUtils.copyProperties(person, vo);
+        return vo;
+    }
+
+    /**
+     * 查询实体中介详情
+     *
+     * @param socialCreditCode 统一社会信用代码
+     * @return 实体中介详情VO
+     */
+    @Override
+    public CcdiIntermediaryEntityDetailVO selectIntermediaryEntityDetail(String socialCreditCode) {
+        CcdiEnterpriseBaseInfo entity = enterpriseBaseInfoMapper.selectById(socialCreditCode);
+        if (entity == null) {
+            return null;
+        }
+
+        CcdiIntermediaryEntityDetailVO vo = new CcdiIntermediaryEntityDetailVO();
+        BeanUtils.copyProperties(entity, vo);
+        return vo;
+    }
+
+    /**
+     * 新增个人中介
+     *
+     * @param addDTO 新增DTO
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public int insertIntermediaryPerson(CcdiIntermediaryPersonAddDTO addDTO) {
+        // 检查人员ID唯一性
+        if (!checkPersonIdUnique(addDTO.getPersonId(), null)) {
+            throw new RuntimeException("该证件号已存在");
+        }
+
+        CcdiBizIntermediary person = new CcdiBizIntermediary();
+        BeanUtils.copyProperties(addDTO, person);
+        person.setIntermediaryType("1");
+
+        return bizIntermediaryMapper.insert(person);
+    }
+
+    /**
+     * 修改个人中介
+     *
+     * @param editDTO 编辑DTO
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public int updateIntermediaryPerson(CcdiIntermediaryPersonEditDTO editDTO) {
+        // 检查人员ID唯一性（排除自己）
+        if (StringUtils.isNotEmpty(editDTO.getPersonId())) {
+            if (!checkPersonIdUnique(editDTO.getPersonId(), editDTO.getBizId())) {
+                throw new RuntimeException("该证件号已存在");
+            }
+        }
+
+        CcdiBizIntermediary person = new CcdiBizIntermediary();
+        BeanUtils.copyProperties(editDTO, person);
+
+        return bizIntermediaryMapper.updateById(person);
+    }
+
+    /**
+     * 新增实体中介
+     *
+     * @param addDTO 新增DTO
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public int insertIntermediaryEntity(CcdiIntermediaryEntityAddDTO addDTO) {
+        // 检查统一社会信用代码唯一性
+        if (StringUtils.isNotEmpty(addDTO.getSocialCreditCode())) {
+            if (!checkSocialCreditCodeUnique(addDTO.getSocialCreditCode(), null)) {
+                throw new RuntimeException("该统一社会信用代码已存在");
+            }
+        }
+
+        CcdiEnterpriseBaseInfo entity = new CcdiEnterpriseBaseInfo();
+        BeanUtils.copyProperties(addDTO, entity);
+        entity.setIntermediaryType("2");
+
+        return enterpriseBaseInfoMapper.insert(entity);
+    }
+
+    /**
+     * 修改实体中介
+     *
+     * @param editDTO 编辑DTO
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public int updateIntermediaryEntity(CcdiIntermediaryEntityEditDTO editDTO) {
+        CcdiEnterpriseBaseInfo entity = new CcdiEnterpriseBaseInfo();
+        BeanUtils.copyProperties(editDTO, entity);
+
+        return enterpriseBaseInfoMapper.updateById(entity);
+    }
+
+    /**
+     * 批量删除中介
+     *
+     * @param ids 需要删除的ID数组
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public int deleteIntermediaryByIds(String[] ids) {
+        int count = 0;
+        for (String id : ids) {
+            // 判断是个人还是实体（个人ID长度较长，实体统一社会信用代码18位）
+            if (id.length() > 18) {
+                // 个人中介
+                count += bizIntermediaryMapper.deleteById(id);
+            } else {
+                // 实体中介
+                count += enterpriseBaseInfoMapper.deleteById(id);
+            }
+        }
+        return count;
+    }
+
+    /**
+     * 校验人员ID唯一性
+     *
+     * @param personId 人员ID
+     * @param bizId    排除的人员ID
+     * @return true=唯一, false=不唯一
+     */
+    @Override
+    public boolean checkPersonIdUnique(String personId, String bizId) {
+        LambdaQueryWrapper<CcdiBizIntermediary> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(CcdiBizIntermediary::getPersonId, personId);
+        if (StringUtils.isNotEmpty(bizId)) {
+            wrapper.ne(CcdiBizIntermediary::getBizId, bizId);
+        }
+        return bizIntermediaryMapper.selectCount(wrapper) == 0;
+    }
+
+    /**
+     * 校验统一社会信用代码唯一性
+     *
+     * @param socialCreditCode 统一社会信用代码
+     * @param excludeId        排除的ID
+     * @return true=唯一, false=不唯一
+     */
+    @Override
+    public boolean checkSocialCreditCodeUnique(String socialCreditCode, String excludeId) {
+        LambdaQueryWrapper<CcdiEnterpriseBaseInfo> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(CcdiEnterpriseBaseInfo::getSocialCreditCode, socialCreditCode);
+        if (StringUtils.isNotEmpty(excludeId)) {
+            wrapper.ne(CcdiEnterpriseBaseInfo::getSocialCreditCode, excludeId);
+        }
+        return enterpriseBaseInfoMapper.selectCount(wrapper) == 0;
+    }
+
+    /**
+     * 导入个人中介数据
+     *
+     * @param list          Excel实体列表
+     * @param updateSupport 是否更新支持
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public String importIntermediaryPerson(List<CcdiIntermediaryPersonExcel> list, boolean updateSupport) {
+        if (StringUtils.isNull(list) || list.isEmpty()) {
+            return "至少需要一条数据";
+        }
+
+        int successNum = 0;
+        int failureNum = 0;
+        StringBuilder successMsg = new StringBuilder();
+        StringBuilder failureMsg = new StringBuilder();
+
+        for (CcdiIntermediaryPersonExcel excel : list) {
+            try {
+                // 验证数据
+                if (StringUtils.isEmpty(excel.getName())) {
+                    throw new RuntimeException("姓名不能为空");
+                }
+                if (StringUtils.isEmpty(excel.getPersonId())) {
+                    throw new RuntimeException("证件号码不能为空");
+                }
+
+                // 转换为实体
+                CcdiBizIntermediary person = new CcdiBizIntermediary();
+                BeanUtils.copyProperties(excel, person);
+                person.setIntermediaryType("1");
+
+                // 检查唯一性
+                if (!checkPersonIdUnique(excel.getPersonId(), null)) {
+                    if (updateSupport) {
+                        // 更新模式：查询已存在记录并更新
+                        LambdaQueryWrapper<CcdiBizIntermediary> wrapper = new LambdaQueryWrapper<>();
+                        wrapper.eq(CcdiBizIntermediary::getPersonId, excel.getPersonId());
+                        CcdiBizIntermediary existingPerson = bizIntermediaryMapper.selectOne(wrapper);
+                        if (existingPerson != null) {
+                            person.setBizId(existingPerson.getBizId());
+                            bizIntermediaryMapper.updateById(person);
+                        }
+                    } else {
+                        throw new RuntimeException("该证件号已存在");
+                    }
+                } else {
+                    bizIntermediaryMapper.insert(person);
+                }
+
+                successNum++;
+                successMsg.append("<br/>").append(successNum).append("、").append(excel.getName()).append(" 导入成功");
+            } catch (Exception e) {
+                failureNum++;
+                failureMsg.append("<br/>").append(failureNum).append("、").append(excel.getName()).append(" 导入失败：");
+                failureMsg.append(e.getMessage());
+            }
+        }
+
+        if (failureNum > 0) {
+            failureMsg.insert(0, "很抱歉，导入失败！共 " + failureNum + " 条数据格式不正确，错误如下：");
+            throw new RuntimeException(failureMsg.toString());
+        } else {
+            successMsg.insert(0, "恭喜您，数据已全部导入成功！共 " + successNum + " 条");
+            return successMsg.toString();
+        }
+    }
+
+    /**
+     * 导入实体中介数据
+     *
+     * @param list          Excel实体列表
+     * @param updateSupport 是否更新支持
+     * @return 结果
+     */
+    @Override
+    @Transactional
+    public String importIntermediaryEntity(List<CcdiIntermediaryEntityExcel> list, boolean updateSupport) {
+        if (StringUtils.isNull(list) || list.isEmpty()) {
+            return "至少需要一条数据";
+        }
+
+        int successNum = 0;
+        int failureNum = 0;
+        StringBuilder successMsg = new StringBuilder();
+        StringBuilder failureMsg = new StringBuilder();
+
+        for (CcdiIntermediaryEntityExcel excel : list) {
+            try {
+                // 验证数据
+                if (StringUtils.isEmpty(excel.getEnterpriseName())) {
+                    throw new RuntimeException("机构名称不能为空");
+                }
+
+                // 转换为实体
+                CcdiEnterpriseBaseInfo entity = new CcdiEnterpriseBaseInfo();
+                BeanUtils.copyProperties(excel, entity);
+                entity.setIntermediaryType("2");
+
+                // 检查唯一性
+                if (StringUtils.isNotEmpty(excel.getSocialCreditCode())) {
+                    if (!checkSocialCreditCodeUnique(excel.getSocialCreditCode(), null)) {
+                        if (updateSupport) {
+                            // 更新模式
+                            enterpriseBaseInfoMapper.updateById(entity);
+                        } else {
+                            throw new RuntimeException("该统一社会信用代码已存在");
+                        }
+                    } else {
+                        enterpriseBaseInfoMapper.insert(entity);
+                    }
+                } else {
+                    // 没有统一社会信用代码，直接插入
+                    enterpriseBaseInfoMapper.insert(entity);
+                }
+
+                successNum++;
+                successMsg.append("<br/>").append(successNum).append("、").append(excel.getEnterpriseName()).append(" 导入成功");
+            } catch (Exception e) {
+                failureNum++;
+                failureMsg.append("<br/>").append(failureNum).append("、").append(excel.getEnterpriseName()).append(" 导入失败：");
+                failureMsg.append(e.getMessage());
+            }
+        }
+
+        if (failureNum > 0) {
+            failureMsg.insert(0, "很抱歉，导入失败！共 " + failureNum + " 条数据格式不正确，错误如下：");
+            throw new RuntimeException(failureMsg.toString());
+        } else {
+            successMsg.insert(0, "恭喜您，数据已全部导入成功！共 " + successNum + " 条");
+            return successMsg.toString();
+        }
+    }
+}