diff --git a/qlib/data/storage/file_storage.py b/qlib/data/storage/file_storage.py
index cfac8d12b..faa3b404a 100644
--- a/qlib/data/storage/file_storage.py
+++ b/qlib/data/storage/file_storage.py
@@ -106,7 +106,10 @@ class FileCalendarStorage(FileStorageMixin, CalendarStorage):
         if not self.uri.exists():
             self._write_calendar(values=[])
         with self.uri.open("rb") as fp:
-            return [str(x) for x in np.loadtxt(fp, str, skiprows=skip_rows, max_rows=n_rows, encoding="utf-8")]
+            return [
+                str(x)
+                for x in np.loadtxt(fp, str, skiprows=skip_rows, max_rows=n_rows, delimiter="\n", encoding="utf-8")
+            ]
 
     def _write_calendar(self, values: Iterable[CalVT], mode: str = "wb"):
         with self.uri.open(mode=mode) as fp: