diff --git a/ppcls/arch/neck/__init__.py b/ppcls/arch/neck/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..7195c9dcd9db038c1c864037ac643208e4f580ce
--- /dev/null
+++ b/ppcls/arch/neck/__init__.py
@@ -0,0 +1,23 @@
+# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+__all__ = ['build_neck"]
+
+def build_neck(config):
+    support_dict = ['FPN', 'FC']
+    module_name = config.pop('name')
+    assert module_name in support_dict, Exception('head only support {}'.format(
+        support_dict))
+    module_class = eval(module_name)(**config)
+    return module_class