diff --git a/ppcls/arch/__init__.py b/ppcls/arch/__init__.py
index ec5529cc8252f6c62c0a0abe0ca8e22fa4a500ee..a51577cc0b1c589873a789eecb41d04a884c7e61 100644
--- a/ppcls/arch/__init__.py
+++ b/ppcls/arch/__init__.py
@@ -15,5 +15,5 @@
 from . import backbone
 
 from .backbone import *
-from .loss import *
+from ppcls.arch.loss_metrics.loss import *
 from .utils import *
diff --git a/ppcls/arch/loss&metrics/__init__.py b/ppcls/arch/loss_metrics/__init__.py
similarity index 100%
rename from ppcls/arch/loss&metrics/__init__.py
rename to ppcls/arch/loss_metrics/__init__.py
diff --git a/ppcls/arch/loss&metrics/loss.py b/ppcls/arch/loss_metrics/loss.py
similarity index 100%
rename from ppcls/arch/loss&metrics/loss.py
rename to ppcls/arch/loss_metrics/loss.py