diff --git a/src/main/java/cn/yinlihupo/domain/entity/FileAttachment.java b/src/main/java/cn/yinlihupo/domain/entity/FileAttachment.java
new file mode 100644
index 0000000..68104aa
--- /dev/null
+++ b/src/main/java/cn/yinlihupo/domain/entity/FileAttachment.java
@@ -0,0 +1,95 @@
+package cn.yinlihupo.domain.entity;
+
+import com.baomidou.mybatisplus.annotation.*;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+/**
+ * 文件附件实体类
+ * 对应数据库表: file_attachment
+ */
+@Data
+@TableName("file_attachment")
+public class FileAttachment {
+
+    @TableId(type = IdType.ASSIGN_ID)
+    private Long id;
+
+    /**
+     * 文件名称
+     */
+    private String fileName;
+
+    /**
+     * 原始文件名
+     */
+    private String originalName;
+
+    /**
+     * 文件路径
+     */
+    private String filePath;
+
+    /**
+     * 文件URL
+     */
+    private String fileUrl;
+
+    /**
+     * 文件类型(MIME)
+     */
+    private String fileType;
+
+    /**
+     * 文件大小(字节)
+     */
+    private Long fileSize;
+
+    /**
+     * 存储类型: local-本地, oss-对象存储, minio-MinIO
+     */
+    private String storageType;
+
+    /**
+     * 关联类型: project, task, work_order, risk, report
+     */
+    private String relatedType;
+
+    /**
+     * 关联ID
+     */
+    private Long relatedId;
+
+    /**
+     * 上传人ID
+     */
+    private Long uploaderId;
+
+    /**
+     * EXIF信息(照片专用)
+     */
+    private Object exifData;
+
+    /**
+     * AI分析结果
+     */
+    private Object aiAnalysis;
+
+    /**
+     * 扩展数据
+     */
+    private Object extraData;
+
+    /**
+     * 创建时间
+     */
+    @TableField(fill = FieldFill.INSERT)
+    private LocalDateTime createTime;
+
+    /**
+     * 删除标记
+     */
+    @TableLogic
+    private Integer deleted;
+}
diff --git a/src/main/java/cn/yinlihupo/mapper/FileAttachmentMapper.java b/src/main/java/cn/yinlihupo/mapper/FileAttachmentMapper.java
new file mode 100644
index 0000000..bc5b25b
--- /dev/null
+++ b/src/main/java/cn/yinlihupo/mapper/FileAttachmentMapper.java
@@ -0,0 +1,12 @@
+package cn.yinlihupo.mapper;
+
+import cn.yinlihupo.domain.entity.FileAttachment;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+/**
+ * 文件附件Mapper接口
+ */
+@Mapper
+public interface FileAttachmentMapper extends BaseMapper<FileAttachment> {
+}
diff --git a/src/main/java/cn/yinlihupo/service/oss/impl/OssServiceImpl.java b/src/main/java/cn/yinlihupo/service/oss/impl/OssServiceImpl.java
index 8c36ef8..4ed363b 100644
--- a/src/main/java/cn/yinlihupo/service/oss/impl/OssServiceImpl.java
+++ b/src/main/java/cn/yinlihupo/service/oss/impl/OssServiceImpl.java
@@ -2,6 +2,8 @@ package cn.yinlihupo.service.oss.impl;
 
 import cn.yinlihupo.common.config.MinioConfig;
 import cn.yinlihupo.common.util.DocumentParserUtil;
+import cn.yinlihupo.domain.entity.FileAttachment;
+import cn.yinlihupo.mapper.FileAttachmentMapper;
 import cn.yinlihupo.service.oss.OssService;
 import io.minio.*;
 import io.minio.errors.*;
@@ -25,6 +27,7 @@ public class OssServiceImpl implements OssService {
 
     private final MinioClient minioClient;
     private final MinioConfig minioConfig;
+    private final FileAttachmentMapper fileAttachmentMapper;
 
     @Override
     public String uploadFile(MultipartFile file, String fileName) {
@@ -52,14 +55,48 @@ public class OssServiceImpl implements OssService {
 
             log.info("文件上传成功: {}/{}", bucketName, objectName);
 
-            // 返回文件URL
-            return getFileUrl(bucketName, objectName);
+            // 构建文件URL
+            String fileUrl = getFileUrl(bucketName, objectName);
+
+            // 保存文件附件记录
+            saveFileAttachment(file, fileName, bucketName, objectName, fileUrl);
+
+            return fileUrl;
         } catch (Exception e) {
             log.error("文件上传失败: {}", e.getMessage(), e);
             throw new RuntimeException("文件上传失败: " + e.getMessage(), e);
         }
     }
 
+    /**
+     * 保存文件附件记录到数据库
+     *
+     * @param file       上传的文件
+     * @param fileName   原始文件名
+     * @param bucketName 存储桶名称
+     * @param objectName 对象名称
+     * @param fileUrl    文件URL
+     */
+    private void saveFileAttachment(MultipartFile file, String fileName, String bucketName,
+                                    String objectName, String fileUrl) {
+        try {
+            FileAttachment attachment = new FileAttachment();
+            attachment.setFileName(objectName);
+            attachment.setOriginalName(fileName);
+            attachment.setFilePath(bucketName + "/" + objectName);
+            attachment.setFileUrl(fileUrl);
+            attachment.setFileType(file.getContentType());
+            attachment.setFileSize(file.getSize());
+            attachment.setStorageType("minio");
+
+            fileAttachmentMapper.insert(attachment);
+            log.info("文件附件记录保存成功, fileName: {}", fileName);
+        } catch (Exception e) {
+            log.error("保存文件附件记录失败: {}", e.getMessage(), e);
+            // 不影响主流程，仅记录日志
+        }
+    }
+
     @Override
     public String readFileAsString(String fileUrl) {
         try (InputStream inputStream = getFileInputStream(fileUrl)) {