diff --git a/ppocr/metrics/__init__.py b/ppocr/metrics/__init__.py
index 3fddac17aa..5d668cd8b5 100644
--- a/ppocr/metrics/__init__.py
+++ b/ppocr/metrics/__init__.py
@@ -23,8 +23,8 @@ __all__ = ['build_metric']
 
 
 def build_metric(config):
-    from .DetMetric import DetMetric
-    from .RecMetric import RecMetric
+    from .det_metric import DetMetric
+    from .rec_metric import RecMetric
 
     support_dict = ['DetMetric', 'RecMetric']
 
diff --git a/ppocr/metrics/DetMetric.py b/ppocr/metrics/det_metric.py
similarity index 100%
rename from ppocr/metrics/DetMetric.py
rename to ppocr/metrics/det_metric.py
diff --git a/ppocr/metrics/RecMetric.py b/ppocr/metrics/rec_metric.py
similarity index 100%
rename from ppocr/metrics/RecMetric.py
rename to ppocr/metrics/rec_metric.py