diff --git a/metagpt/base/__init__.py b/metagpt/base/__init__.py
index e69de29bb..a2fbe8eaf 100644
--- a/metagpt/base/__init__.py
+++ b/metagpt/base/__init__.py
@@ -0,0 +1,8 @@
+from metagpt.base.base_env import BaseEnvironment
+from metagpt.base.base_role import BaseRole
+
+
+__all__ = [
+    "BaseEnvironment",
+    "BaseRole",
+]