diff --git a/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiFileUploadServiceImpl.java b/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiFileUploadServiceImpl.java
new file mode 100644
index 0000000..5155fe5
--- /dev/null
+++ b/ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiFileUploadServiceImpl.java
@@ -0,0 +1,104 @@
+package com.ruoyi.ccdi.project.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.ruoyi.ccdi.project.domain.dto.CcdiFileUploadQueryDTO;
+import com.ruoyi.ccdi.project.domain.entity.CcdiFileUploadRecord;
+import com.ruoyi.ccdi.project.domain.vo.CcdiFileUploadStatisticsVO;
+import com.ruoyi.ccdi.project.mapper.CcdiFileUploadRecordMapper;
+import com.ruoyi.ccdi.project.service.ICcdiFileUploadService;
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 文件上传服务实现
+ *
+ * @author ruoyi
+ * @date 2026-03-05
+ */
+@Slf4j
+@Service
+public class CcdiFileUploadServiceImpl implements ICcdiFileUploadService {
+
+    @Resource
+    private CcdiFileUploadRecordMapper recordMapper;
+
+    @Override
+    public Page<CcdiFileUploadRecord> selectPage(Page<CcdiFileUploadRecord> page,
+                                                  CcdiFileUploadQueryDTO queryDTO) {
+        LambdaQueryWrapper<CcdiFileUploadRecord> queryWrapper = new LambdaQueryWrapper<>();
+
+        // 项目ID
+        if (queryDTO.getProjectId() != null) {
+            queryWrapper.eq(CcdiFileUploadRecord::getProjectId, queryDTO.getProjectId());
+        }
+
+        // 文件状态
+        if (StringUtils.hasText(queryDTO.getFileStatus())) {
+            queryWrapper.eq(CcdiFileUploadRecord::getFileStatus, queryDTO.getFileStatus());
+        }
+
+        // 文件名称(模糊查询)
+        if (StringUtils.hasText(queryDTO.getFileName())) {
+            queryWrapper.like(CcdiFileUploadRecord::getFileName, queryDTO.getFileName());
+        }
+
+        // 上传人
+        if (StringUtils.hasText(queryDTO.getUploadUser())) {
+            queryWrapper.eq(CcdiFileUploadRecord::getUploadUser, queryDTO.getUploadUser());
+        }
+
+        // 按上传时间倒序
+        queryWrapper.orderByDesc(CcdiFileUploadRecord::getUploadTime);
+
+        return recordMapper.selectPage(page, queryWrapper);
+    }
+
+    @Override
+    public CcdiFileUploadStatisticsVO countByStatus(Long projectId) {
+        // 查询统计数据
+        List<Map<String, Object>> statusCounts = recordMapper.countByStatus(projectId);
+
+        // 组装 VO
+        CcdiFileUploadStatisticsVO vo = new CcdiFileUploadStatisticsVO();
+        vo.setUploading(0L);
+        vo.setParsing(0L);
+        vo.setParsedSuccess(0L);
+        vo.setParsedFailed(0L);
+
+        long total = 0L;
+        for (Map<String, Object> item : statusCounts) {
+            String status = (String) item.get("status");
+            Long count = ((Number) item.get("count")).longValue();
+            total += count;
+
+            switch (status) {
+                case "uploading" -> vo.setUploading(count);
+                case "parsing" -> vo.setParsing(count);
+                case "parsed_success" -> vo.setParsedSuccess(count);
+                case "parsed_failed" -> vo.setParsedFailed(count);
+            }
+        }
+
+        vo.setTotal(total);
+        return vo;
+    }
+
+    @Override
+    public CcdiFileUploadRecord getById(Long id) {
+        return recordMapper.selectById(id);
+    }
+
+    // batchUploadFiles 方法将在下一步实现
+    @Override
+    public String batchUploadFiles(Long projectId, MultipartFile[] files, String username) {
+        // TODO: 将在下一步实现
+        throw new UnsupportedOperationException("Method not implemented yet");
+    }
+}