diff --git a/src/main/java/com/knowledge/base/infrastructure/south/minio/MinioOSGatewayImpl.java b/src/main/java/com/knowledge/base/infrastructure/south/minio/MinioOSGatewayImpl.java
index 7cb269e..75b1f48 100644
--- a/src/main/java/com/knowledge/base/infrastructure/south/minio/MinioOSGatewayImpl.java
+++ b/src/main/java/com/knowledge/base/infrastructure/south/minio/MinioOSGatewayImpl.java
@@ -52,11 +52,11 @@ public class MinioOSGatewayImpl implements ObjectStorageGateway {
 
     @Override
     public void ensureBucketExists(String bucket) throws Exception {
-        boolean exists = minioClient.bucketExists(
+        boolean exists = localMinioClient.bucketExists(
                 BucketExistsArgs.builder().bucket(bucket).build()
         );
         if (!exists) {
-            minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucket).build());
+            localMinioClient.makeBucket(MakeBucketArgs.builder().bucket(bucket).build());
             log.info("已创建 bucket: {}", bucket);
         }
     }
@@ -84,7 +84,7 @@ public class MinioOSGatewayImpl implements ObjectStorageGateway {
             return String.format("http://s3.wisdompulse.cn/%s/%s", bucket, objectPath);
         } else {
             // 生成预签名链接（最大 7 天）
-            return minioClient.getPresignedObjectUrl(
+            return localMinioClient.getPresignedObjectUrl(
                     GetPresignedObjectUrlArgs.builder()
                             .method(Method.GET)
                             .bucket(bucket)
@@ -103,7 +103,7 @@ public class MinioOSGatewayImpl implements ObjectStorageGateway {
         }
 
         try {
-            Iterable<Result<DeleteError>> results = minioClient.removeObjects(
+            Iterable<Result<DeleteError>> results = localMinioClient.removeObjects(
                     RemoveObjectsArgs.builder()
                             .bucket(bucket)
                             .objects(objectPaths.stream()