diff --git a/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/api/DefaultAttachmentClient.java b/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/api/DefaultAttachmentClient.java
index df966f4..6daef0a 100644
--- a/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/api/DefaultAttachmentClient.java
+++ b/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/api/DefaultAttachmentClient.java
@@ -240,6 +240,7 @@ public class DefaultAttachmentClient implements AttachmentClient {
 	 * @param filename
 	 */
 	private void removeDuplicateObject(String businessId, String filename) {
+		log.info("remove duplicate name files {} in business: {}", filename, businessId);
 		Optional<AttachmentDetail> op = findByBusinessId(Arrays.asList(businessId));
 
 		op.ifPresent(detail -> {
diff --git a/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/model/AttachmentDetail.java b/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/model/AttachmentDetail.java
index 42b2baf..baa6120 100644
--- a/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/model/AttachmentDetail.java
+++ b/mall-ebtp-cloud-attachment-sdk/src/main/java/com/chinaunicom/ebtp/mall/cloud/attachment/sdk/model/AttachmentDetail.java
@@ -26,8 +26,8 @@ public class AttachmentDetail extends Hashtable<String, List<AttachmentEntity>>
 
 	@Override
 	public synchronized List<AttachmentEntity> get(Object key) {
-		if (contains(key)) {
-			super.get(key);
+		if (containsKey(key)) {
+			return super.get(key);
 		}
 		return new ArrayList<>();
 	}