diff --git a/python/ppc_model/interface/model_base.py b/python/ppc_model/interface/model_base.py
index 050980ae..0e96565f 100644
--- a/python/ppc_model/interface/model_base.py
+++ b/python/ppc_model/interface/model_base.py
@@ -31,3 +31,7 @@ def load_model(self, file_path):
 
 class VerticalModel(ModelBase):
     mode = "VERTICAL"
+
+    def __init__(self, ctx):
+        super().__init__(ctx)
+        self._all_feature_name = []
diff --git a/python/ppc_model/secure_lgbm/vertical/booster.py b/python/ppc_model/secure_lgbm/vertical/booster.py
index a8868dba..076f855c 100644
--- a/python/ppc_model/secure_lgbm/vertical/booster.py
+++ b/python/ppc_model/secure_lgbm/vertical/booster.py
@@ -33,7 +33,6 @@ def __init__(self, ctx: SecureLGBMContext, dataset: SecureDataset) -> None:
         self._train_praba = None
         self._test_weights = None
         self._test_praba = None
-
         random.seed(ctx.model_params.random_state)
         np.random.seed(ctx.model_params.random_state)
 
@@ -253,11 +252,12 @@ def merge_model_file(self):
         lgbm_model['label_column'] = 'y'
         lgbm_model['participant_agency_list'] = []
         for partner_index in range(0, len(self.ctx.participant_id_list)):
-            agency_info = {'agency': self.ctx.participant_id_list[partner_index]}
-            agency_info['fields'] = self.ctx._all_feature_name[partner_index]
+            agency_info = {
+                'agency': self.ctx.participant_id_list[partner_index]}
+            agency_info['fields'] = self._all_feature_name[partner_index]
             lgbm_model['participant_agency_list'].append(agency_info)
-        
-        lgbm_model['model_dict'] = self.ctx.model_params
+
+        lgbm_model['model_dict'] = self.ctx.model_params.get_all_params()
         model_text = {}
         with open(self.ctx.feature_bin_file, 'rb') as f:
             feature_bin_data = f.read()
@@ -265,9 +265,10 @@ def merge_model_file(self):
             model_data = f.read()
         feature_bin_enc = encrypt_data(self.ctx.key, feature_bin_data)
         model_data_enc = encrypt_data(self.ctx.key, model_data)
-        
+
         my_agency_id = self.ctx.components.config_data['AGENCY_ID']
-        model_text[my_agency_id] = [cipher_to_base64(feature_bin_enc), cipher_to_base64(model_data_enc)]
+        model_text[my_agency_id] = [cipher_to_base64(
+            feature_bin_enc), cipher_to_base64(model_data_enc)]
 
         # 发送&接受文件
         for partner_index in range(0, len(self.ctx.participant_id_list)):
@@ -285,7 +286,8 @@ def merge_model_file(self):
                 model_data_enc = self._receive_byte_data(
                     self.ctx, f'{LGBMMessage.MODEL_DATA.value}_model_data', partner_index)
                 model_text[self.ctx.participant_id_list[partner_index]] = \
-                    [cipher_to_base64(feature_bin_enc), cipher_to_base64(model_data_enc)]
+                    [cipher_to_base64(feature_bin_enc),
+                     cipher_to_base64(model_data_enc)]
         lgbm_model['model_text'] = model_text
 
         # 上传密文模型
@@ -300,7 +302,8 @@ def split_model_file(self):
         # 传入模型
         my_agency_id = self.ctx.components.config_data['AGENCY_ID']
         model_text = self.ctx.model_predict_algorithm['model_text']
-        feature_bin_enc, model_data_enc = [base64_to_cipher(i) for i in model_text[my_agency_id]]
+        feature_bin_enc, model_data_enc = [
+            base64_to_cipher(i) for i in model_text[my_agency_id]]
 
         # 解密文件
         feature_bin_data = decrypt_data(self.ctx.key, feature_bin_enc)
diff --git a/python/ppc_model/secure_lr/vertical/booster.py b/python/ppc_model/secure_lr/vertical/booster.py
index c80f1a5d..23623787 100644
--- a/python/ppc_model/secure_lr/vertical/booster.py
+++ b/python/ppc_model/secure_lr/vertical/booster.py
@@ -271,10 +271,10 @@ def merge_model_file(self):
         lr_model['participant_agency_list'] = []
         for partner_index in range(0, len(self.ctx.participant_id_list)):
             agency_info = {'agency': self.ctx.participant_id_list[partner_index]}
-            agency_info['fields'] = self.ctx._all_feature_name[partner_index]
+            agency_info['fields'] = self._all_feature_name[partner_index]
             lr_model['participant_agency_list'].append(agency_info)
         
-        lr_model['model_dict'] = self.ctx.model_params
+        lr_model['model_dict'] = self.ctx.model_params.get_all_params()
         model_text = {}
         with open(self.ctx.model_data_file, 'rb') as f:
             model_data = f.read()