diff --git a/flearn/common/strategy/avg.py b/flearn/common/strategy/avg.py
index 36c1b22..dc2907d 100644
--- a/flearn/common/strategy/avg.py
+++ b/flearn/common/strategy/avg.py
@@ -24,7 +24,7 @@ def server(self, ensemble_params_lst, round_):
         try:
             w_glob = self.server_ensemble(agg_weight_lst, w_local_lst)
         except Exception as e:
-            return self.server_exception(e)
+            self.server_exception(e)
 
         return {"w_glob": w_glob}
 
diff --git a/flearn/common/strategy/bn.py b/flearn/common/strategy/bn.py
index 9770d15..0ec7953 100644
--- a/flearn/common/strategy/bn.py
+++ b/flearn/common/strategy/bn.py
@@ -28,5 +28,5 @@ def server(self, ensemble_params_lst, round_):
 
             w_glob = self.server_ensemble(agg_weight_lst, w_local_lst, key_lst=key_lst)
         except Exception as e:
-            return self.server_exception(e)
+            self.server_exception(e)
         return {"w_glob": w_glob}
diff --git a/flearn/common/strategy/lg.py b/flearn/common/strategy/lg.py
index 151ca48..4b57869 100644
--- a/flearn/common/strategy/lg.py
+++ b/flearn/common/strategy/lg.py
@@ -35,5 +35,5 @@ def server(self, ensemble_params_lst, round_):
                 agg_weight_lst, w_local_lst, key_lst=self.shared_key_layers
             )
         except Exception as e:
-            return self.server_exception(e)
+            self.server_exception(e)
         return {"w_glob": w_glob}
diff --git a/flearn/common/strategy/lg_reverse.py b/flearn/common/strategy/lg_reverse.py
index 7d81465..fa4f2fa 100644
--- a/flearn/common/strategy/lg_reverse.py
+++ b/flearn/common/strategy/lg_reverse.py
@@ -38,5 +38,5 @@ def server(self, ensemble_params_lst, round_):
         try:
             w_glob = self.server_ensemble(agg_weight_lst, w_local_lst)
         except Exception as e:
-            return self.server_exception(e)
+            self.server_exception(e)
         return {"w_glob": w_glob}
diff --git a/flearn/common/strategy/pav.py b/flearn/common/strategy/pav.py
index aa2b609..009a8a4 100644
--- a/flearn/common/strategy/pav.py
+++ b/flearn/common/strategy/pav.py
@@ -158,13 +158,21 @@ def pav_kd(self, w_local_lst, w_glob, **kwargs):
 
         return w_glob
 
+    def server_post_processing(self, ensemble_params_lst, ensemble_params, **kwargs):
+        w_local_lst = self.extract_lst(ensemble_params_lst, "params")
+        ensemble_params["w_glob"] = self.pav_kd(
+            w_local_lst, ensemble_params["w_glob"], **kwargs
+        )
+
+        return ensemble_params
+
     def server(self, ensemble_params_lst, round_, **kwargs):
         """服务端聚合客户端模型并蒸馏
         Args:
             kwargs :            dict
                                 蒸馏所需参数
         """
-        g_shared = super().server(ensemble_params_lst, round_)
-        w_local_lst = self.extract_lst(ensemble_params_lst, "params")
-        g_shared["w_glob"] = self.pav_kd(w_local_lst, g_shared["w_glob"], **kwargs)
-        return g_shared
+        ensemble_params = super().server(ensemble_params_lst, round_)
+        return self.server_post_processing(
+            ensemble_params_lst, ensemble_params, **kwargs
+        )
diff --git a/flearn/common/strategy/strategy.py b/flearn/common/strategy/strategy.py
index 0fc97f1..6176718 100644
--- a/flearn/common/strategy/strategy.py
+++ b/flearn/common/strategy/strategy.py
@@ -28,7 +28,7 @@ def extract_lst(lst, key):
         return list(map(lambda x: x[key], lst))
 
     def server_pre_processing(self, ensemble_params_lst):
-        """提取服务器端收到的的参数
+        """服务器端对参数的预处理, 提取服务器端收到的的参数
 
         Args:
             ensemble_params_lst :   list
@@ -47,6 +47,23 @@ def server_pre_processing(self, ensemble_params_lst):
             w_local_lst.append(p["params"])
         return agg_weight_lst, w_local_lst
 
+    def server_post_processing(self, ensemble_params_lst, ensemble_params, **kwargs):
+        """服务器端对参数的后处理, 对集成后的参数做进一步的更新
+
+        Args:
+            ensemble_params_lst :   list
+                                    每个客户端发送的参数组成的列表
+
+            ensemble_params     :   dict
+                                    集成后的参数，准备发回客户端的参数
+
+
+        Returns:
+            dict :
+                同ensemble_params结构
+        """
+        return ensemble_params
+
     def revice_processing(self, data):
         """数据加密并转为二进制流
 
@@ -97,22 +114,9 @@ def server_exception(self, e):
         Args:
             e :                 Exception
                                 异常消息
-
-        Returns:
-            dict : Dict {
-                'glob_params' : str
-                                编码后的全局模型
-
-                'code' :        int
-                                状态码,
-
-                'msg' :         str
-                                状态消息,
-            }
         """
         print(e)
-        print("检查客户端模型参数是否正常")
-        return ""
+        raise SystemExit("检查客户端模型参数是否正常")
 
     def server_ensemble(self, agg_weight_lst, w_local_lst, key_lst=None):
         """服务端集成函数
@@ -149,8 +153,8 @@ def client(self, trainer, i, agg_weight=1.0):
         """获取客户端需要上传的模型参数及所占全局模型的权重
 
         Args:
-            w_local :       collections.OrderedDict
-                            模型参数，model.state_dict()
+            trainer :       Object
+                            训练器
 
             agg_weight :    float
                             模型参数所占权重（该客户端聚合所占权重）
@@ -164,11 +168,6 @@ def client(self, trainer, i, agg_weight=1.0):
                                 模型参数所占权重（该客户端聚合所占权重）
             }
         """
-        w_shared = {"params": {}, "agg_weight": agg_weight}
-        # for k in self.shared_key_layers:
-        #     w_shared['params'][k] = w_local[k].cpu()
-        # return w_shared
-
         return NotImplemented
 
     @abstractmethod
@@ -184,23 +183,11 @@ def server(self, ensemble_params_lst, round_):
 
         Returns:
             dict : Dict {
-                'glob_params' : str
-                                编码后的全局模型
-
-                'code' :        int
-                                状态码,
-
-                'msg' :         str
-                                状态消息,
+                'w_glob' :      collections.OrderedDict
+                                集成后的模型参数字典
             }
         """
-        agg_weight_lst, w_local_lst = self.server_pre_processing(ensemble_params_lst)
-        # N, idxs_users, w_glob = self.server_pre_processing(w_local_lst)
-        try:
-            return NotImplemented
-        except Exception as e:
-            return self.server_exception(e)
-        return {"w_glob": w_glob}
+        return NotImplemented
 
     @abstractmethod
     def client_revice(self, trainer, w_glob_b):
@@ -217,7 +204,4 @@ def client_revice(self, trainer, w_glob_b):
             collections.OrderedDict
             更新后的模型参数，model.state_dict()
         """
-        w_glob = pickle.loads(w_glob_b)
-        # for k in self.shared_key_layers:
-        #     w_local[k] = w_glob[k]
         return NotImplemented