diff --git a/unilife-server/src/main/java/com/unilife/config/OssConfig.java b/unilife-server/src/main/java/com/unilife/config/OssConfig.java
new file mode 100644
index 0000000..792e539
--- /dev/null
+++ b/unilife-server/src/main/java/com/unilife/config/OssConfig.java
@@ -0,0 +1,39 @@
+package com.unilife.config;
+
+import com.aliyun.oss.OSS;
+import com.aliyun.oss.OSSClientBuilder;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OssConfig {
+    
+    @Value("${aliyun.oss.endpoint}")
+    private String endpoint;
+    
+    @Value("${aliyun.oss.accessKeyId}")
+    private String accessKeyId;
+    
+    @Value("${aliyun.oss.accessKeySecret}")
+    private String accessKeySecret;
+    
+    @Value("${aliyun.oss.bucketName}")
+    private String bucketName;
+    
+    @Value("${aliyun.oss.urlPrefix}")
+    private String urlPrefix;
+    
+    @Bean
+    public OSS ossClient() {
+        return new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
+    }
+    
+    public String getBucketName() {
+        return bucketName;
+    }
+    
+    public String getUrlPrefix() {
+        return urlPrefix;
+    }
+} 
\ No newline at end of file
diff --git a/unilife-server/src/main/java/com/unilife/utils/OssService.java b/unilife-server/src/main/java/com/unilife/utils/OssService.java
new file mode 100644
index 0000000..9b6a602
--- /dev/null
+++ b/unilife-server/src/main/java/com/unilife/utils/OssService.java
@@ -0,0 +1,123 @@
+package com.unilife.utils;
+
+import com.aliyun.oss.OSS;
+import com.aliyun.oss.model.DeleteObjectRequest;
+import com.aliyun.oss.model.GeneratePresignedUrlRequest;
+import com.aliyun.oss.model.PutObjectRequest;
+import com.unilife.config.OssConfig;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Date;
+import java.util.UUID;
+
+@Service
+@Slf4j
+public class OssService {
+
+    @Autowired
+    private OSS ossClient;
+
+    @Autowired
+    private OssConfig ossConfig;
+
+    /**
+     * 上传文件到OSS
+     */
+    public String uploadFile(MultipartFile file) throws IOException {
+        // 生成文件名
+        String originalFilename = file.getOriginalFilename();
+        String extension = "";
+        if (originalFilename != null && originalFilename.contains(".")) {
+            extension = originalFilename.substring(originalFilename.lastIndexOf("."));
+        }
+        
+        // 按日期组织文件夹
+        String dateFolder = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy/MM/dd"));
+        String fileName = dateFolder + "/" + UUID.randomUUID().toString() + extension;
+        
+        try (InputStream inputStream = file.getInputStream()) {
+            // 创建上传请求
+            PutObjectRequest putObjectRequest = new PutObjectRequest(
+                ossConfig.getBucketName(), 
+                fileName, 
+                inputStream
+            );
+            
+            // 执行上传
+            ossClient.putObject(putObjectRequest);
+            
+            // 返回文件URL
+            String fileUrl = ossConfig.getUrlPrefix() + fileName;
+            log.info("文件上传成功: {}", 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());
+        }
+    }
+
+    /**
+     * 删除OSS文件
+     */
+    public void deleteFile(String fileUrl) {
+        try {
+            // 从URL中提取对象名称
+            String objectName = getObjectNameFromUrl(fileUrl);
+            if (objectName != null) {
+                DeleteObjectRequest deleteObjectRequest = new DeleteObjectRequest(
+                    ossConfig.getBucketName(), 
+                    objectName
+                );
+                ossClient.deleteObject(deleteObjectRequest);
+                log.info("文件删除成功: {}", fileUrl);
+            }
+        } catch (Exception e) {
+            log.error("文件删除失败: {}", e.getMessage(), e);
+        }
+    }
+
+    /**
+     * 生成预签名URL（临时访问链接）
+     */
+    public String generatePresignedUrl(String fileUrl) {
+        try {
+            String objectName = getObjectNameFromUrl(fileUrl);
+            if (objectName == null) {
+                return fileUrl;
+            }
+            
+            // 设置URL过期时间为1小时
+            Date expiration = new Date(System.currentTimeMillis() + 3600 * 1000);
+            
+            GeneratePresignedUrlRequest generatePresignedUrlRequest = new GeneratePresignedUrlRequest(
+                ossConfig.getBucketName(), 
+                objectName
+            );
+            generatePresignedUrlRequest.setExpiration(expiration);
+            
+            URL url = ossClient.generatePresignedUrl(generatePresignedUrlRequest);
+            return url.toString();
+        } catch (Exception e) {
+            log.error("生成预签名URL失败: {}", e.getMessage(), e);
+            return fileUrl;
+        }
+    }
+
+    /**
+     * 从URL中提取对象名称
+     */
+    public String getObjectNameFromUrl(String fileUrl) {
+        if (fileUrl == null || !fileUrl.startsWith(ossConfig.getUrlPrefix())) {
+            return null;
+        }
+        return fileUrl.substring(ossConfig.getUrlPrefix().length());
+    }
+} 
\ No newline at end of file