diff --git a/funasr/layers/inversible_interface.py b/funasr/layers/inversible_interface.py
new file mode 100644
index 000000000..657ec6800
--- /dev/null
+++ b/funasr/layers/inversible_interface.py
@@ -0,0 +1,14 @@
+from abc import ABC
+from abc import abstractmethod
+from typing import Tuple
+
+import torch
+
+
+class InversibleInterface(ABC):
+    @abstractmethod
+    def inverse(
+        self, input: torch.Tensor, input_lengths: torch.Tensor = None
+    ) -> Tuple[torch.Tensor, torch.Tensor]:
+        # return output, output_lengths
+        raise NotImplementedError
\ No newline at end of file