diff --git a/models/ctr_dnn/model.py b/models/ctr_dnn/model.py
index d08be491fa8cf8c33ad969889841b8bef4143461..e62ef34c40b00a576605ad85f0a48447666f35fa 100644
--- a/models/ctr_dnn/model.py
+++ b/models/ctr_dnn/model.py
@@ -124,6 +124,12 @@ class Train(object):
 
         return self.metrics
 
+    def metric_extras(self):
+        self.metric_vars = [self.metrics[0]]
+        self.metric_alias = ["AUC"]
+        self.fetch_interval_batchs = 10 
+        return (self.metric_vars, self.metric_alias, self.fetch_interval_batchs)
+
     def optimizer(self):
         learning_rate = envs.get_global_env("hyper_parameters.learning_rate", None ,self.namespace)
         optimizer = fluid.optimizer.Adam(learning_rate, lazy_mode=True)
diff --git a/trainer/single_train.py b/trainer/single_train.py
index 594574f15fbaff209bd1ded4f904aa64bedb811d..49b76350f6da4b5f02076b85563c1ea1ccb86619 100644
--- a/trainer/single_train.py
+++ b/trainer/single_train.py
@@ -65,6 +65,7 @@ class SingleTrainer(Trainer):
         self.model.input()
         self.model.net()
         self.metrics = self.model.metrics()
+        self.metric_extras = self.model.metric_extras()
         loss = self.model.avg_loss()
 
         optimizer = self.model.optimizer()
@@ -80,10 +81,10 @@ class SingleTrainer(Trainer):
         context['is_exit'] = True
 
     def infer(self, context):
-        print("Need to be implement")
         context['is_exit'] = True
 
     def terminal(self, context):
+        print("clean up and exit")
         context['is_exit'] = True
 
 
@@ -162,16 +163,14 @@ class SingleTrainerWithDataset(SingleTrainer):
 
         epochs = envs.get_global_env("train.epochs")
 
-        print("fetch_list: {}".format(len(self.metrics)))
-
         for i in range(epochs):
             self.exe.train_from_dataset(program=fluid.default_main_program(),
                                         dataset=dataset,
-                                        fetch_list=self.metrics,
-                                        fetch_info=["auc ", "batch auc"],
-                                        print_period=1)
+                                        fetch_list=self.metric_extras[0],
+                                        fetch_info=self.metric_extras[1],
+                                        print_period=self.metric_extras[2])
         context['status'] = 'infer_pass'
 
 
-def infer(self, context):
-    context['status'] = 'terminal_pass'
+    def infer(self, context):
+        context['status'] = 'terminal_pass'
diff --git a/utils/envs.py b/utils/envs.py
index b4ea34575dad0b5c7fda5a27224bec37abc85b40..a0cd40bc18bc508daf5f07bcde7f041a88277aa6 100644
--- a/utils/envs.py
+++ b/utils/envs.py
@@ -53,7 +53,7 @@ def pretty_print_envs():
         max_k = max(max_k, len(k))
         max_v = max(max_v, len(str(v)))
 
-    h_format = "{{:^{}s}}{{:<{}s}}\n".format(max_k, max_v)
+    h_format = "{{:^{}s}}{}{{:<{}s}}\n".format(max_k, " " * spacing, max_v)
     l_format = "{{:<{}s}}{{}}{{:<{}s}}\n".format(max_k, max_v)
     length = max_k + max_v + spacing