diff --git a/scripts/data_collector/base.py b/scripts/data_collector/base.py
index 672e593fa5..abb762c682 100644
--- a/scripts/data_collector/base.py
+++ b/scripts/data_collector/base.py
@@ -440,6 +440,7 @@ def normalize_data(self, date_field_name: str = "date", symbol_field_name: str =
             $ python collector.py normalize_data --source_dir ~/.qlib/instrument_data/source --normalize_dir ~/.qlib/instrument_data/normalize --region CN --interval 1d
         """
         _class = getattr(self._cur_module, self.normalize_class_name)
+        kwargs.setdefault("interval", self.interval)
         yc = Normalize(
             source_dir=self.source_dir,
             target_dir=self.normalize_dir,