diff --git a/deepmd/model_format/atomic_model.py b/deepmd/model_format/atomic_model.py
index cdc08fe1f6..f1245d8bd4 100644
--- a/deepmd/model_format/atomic_model.py
+++ b/deepmd/model_format/atomic_model.py
@@ -21,19 +21,19 @@ class BAM(ABC):
 
         @abstractmethod
         def get_fitting_output_def(self) -> FittingOutputDef:
-            raise NotImplementedError
+            pass
 
         @abstractmethod
         def get_rcut(self) -> float:
-            raise NotImplementedError
+            pass
 
         @abstractmethod
         def get_sel(self) -> List[int]:
-            raise NotImplementedError
+            pass
 
         @abstractmethod
         def distinguish_types(self) -> bool:
-            raise NotImplementedError
+            pass
 
         @abstractmethod
         def forward_atomic(
@@ -45,14 +45,14 @@ def forward_atomic(
             fparam: Optional[T_Tensor] = None,
             aparam: Optional[T_Tensor] = None,
         ) -> Dict[str, T_Tensor]:
-            raise NotImplementedError
+            pass
 
         @abstractmethod
         def serialize(self) -> dict:
-            raise NotImplementedError
+            pass
 
         @abstractclassmethod
         def deserialize(cls):
-            raise NotImplementedError
+            pass
 
     return BAM