diff --git a/hs-im-server/im-service/src/main/java/com/lld/im/service/utils/MinioUtil.java b/hs-im-server/im-service/src/main/java/com/lld/im/service/utils/MinioUtil.java
index 8b89f35..e65e9c9 100644
--- a/hs-im-server/im-service/src/main/java/com/lld/im/service/utils/MinioUtil.java
+++ b/hs-im-server/im-service/src/main/java/com/lld/im/service/utils/MinioUtil.java
@@ -69,6 +69,8 @@ public class MinioUtil {
             } else {
                 // 创建一个名为ota的存储桶
                 minioClient.makeBucket(MakeBucketArgs.builder().bucket(newBucket).build());
+                // 创建新的存储桶时设置public权限
+                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucketName).config(policy(bucketName)).build());
                 log.info("create a new bucket.");
             }
             //update-begin-author:liusq date:20210809 for: 过滤上传文件类型
@@ -230,6 +232,8 @@ public class MinioUtil {
         } else {
             // 创建一个名为ota的存储桶
             minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
+            // 创建新的存储桶时设置public权限
+            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucketName).config(policy(bucketName)).build());
             log.info("create a new bucket.");
         }
         PutObjectArgs objectArgs = PutObjectArgs.builder().object(relativePath)
@@ -241,4 +245,25 @@ public class MinioUtil {
         return minioUrl+bucketName+"/"+relativePath;
     }
 
+    private static String policy(String bucket) {
+        return "{\n" +
+                "\t\"Version\": \"2012-10-17\",\n" +
+                "\t\"Statement\": [{\n" +
+                "\t\t\"Effect\": \"Allow\",\n" +
+                "\t\t\"Principal\": {\n" +
+                "\t\t\t\"AWS\": [\"*\"]\n" +
+                "\t\t},\n" +
+                "\t\t\"Action\": [\"s3:GetBucketLocation\", \"s3:ListBucket\", \"s3:ListBucketMultipartUploads\"],\n" +
+                "\t\t\"Resource\": [\"arn:aws:s3:::" + bucket + "\"]\n" +
+                "\t}, {\n" +
+                "\t\t\"Effect\": \"Allow\",\n" +
+                "\t\t\"Principal\": {\n" +
+                "\t\t\t\"AWS\": [\"*\"]\n" +
+                "\t\t},\n" +
+                "\t\t\"Action\": [\"s3:AbortMultipartUpload\", \"s3:DeleteObject\", \"s3:GetObject\", \"s3:ListMultipartUploadParts\", \"s3:PutObject\"],\n" +
+                "\t\t\"Resource\": [\"arn:aws:s3:::" + bucket + "/*\"]\n" +
+                "\t}]\n" +
+                "}\n";
+    }
+
 }