diff --git a/src/main/java/com/ycwl/basic/device/operator/AliOssStorageOperator.java b/src/main/java/com/ycwl/basic/device/operator/AliOssStorageOperator.java
index d765332..faa0135 100644
--- a/src/main/java/com/ycwl/basic/device/operator/AliOssStorageOperator.java
+++ b/src/main/java/com/ycwl/basic/device/operator/AliOssStorageOperator.java
@@ -69,22 +69,14 @@ public class AliOssStorageOperator extends ADeviceStorageOperator {
         if (startDate == null || endDate == null) {
             return null;
         }
-        List<FileObject> fileList = new ArrayList<>();
-        if (startDate.after(endDate)) {
-            return fileList;
-        }
         Calendar calendar = Calendar.getInstance();
         calendar.setTime(startDate);
         calendar.set(Calendar.SECOND, 0);
         SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
-        while (calendar.getTime().before(endDate)) {
-            String prefix = dateFormat.format(calendar.getTime());
-            List<FileObject> fileListByPrefix = getOssFileListByPrefix(prefix);
-            if (fileListByPrefix == null) {
-                return null;
-            }
-            fileList.addAll(fileListByPrefix);
-            calendar.add(Calendar.DATE, 1);
+        String prefix = dateFormat.format(calendar.getTime());
+        List<FileObject> fileList = getOssFileListByPrefix(prefix);
+        if (fileList == null) {
+            return null;
         }
         calendar.clear();
         return fileList.stream()