diff --git a/fleetrec/core/trainers/single_trainer.py b/fleetrec/core/trainers/single_trainer.py
index c3da7edd9619458b53988f415c8e339256e3d6de..989297a04f6d031588ec58d606f9e74a0d5e4556 100644
--- a/fleetrec/core/trainers/single_trainer.py
+++ b/fleetrec/core/trainers/single_trainer.py
@@ -73,6 +73,7 @@ class SingleTrainer(TranspileTrainer):
         metrics_format.append("{}: {{}}".format("batch"))
 
         for name, var in self.model.get_metrics().items():
+            metrics_varnames.append(var.name)
             metrics_format.append("{}: {{}}".format(name))
 
         metrics_format = ", ".join(metrics_format)
@@ -86,12 +87,11 @@ class SingleTrainer(TranspileTrainer):
                         program=program,
                         fetch_list=metrics_varnames)
 
-                    metrics_rets = np.mean(metrics_rets, axis=0)
                     metrics = [epoch, batch_id]
-                    metrics.extend(metrics_rets.tolist())
+                    metrics.extend(metrics_rets)
 
                     if batch_id % 10 == 0 and batch_id != 0:
-                        print(metrics_format.format(metrics))
+                        print(metrics_format.format(*metrics))
                     batch_id += 1
             except fluid.core.EOFException:
                 reader.reset()
diff --git a/fleetrec/core/utils/dataloader_instance.py b/fleetrec/core/utils/dataloader_instance.py
index 9786c262eb9078f2a463c1230f9fb1412adece9a..8c43c610a29394b3b334d755bc95d21fb0f514ce 100644
--- a/fleetrec/core/utils/dataloader_instance.py
+++ b/fleetrec/core/utils/dataloader_instance.py
@@ -40,7 +40,7 @@ def dataloader(readerclass, train, yaml_file):
         for file in files:
             with open(file, 'r') as f:
                 for line in f:
-                    line = line.rstrip('\n').split('\t')
+                    line = line.rstrip('\n')
                     iter = reader.generate_sample(line)
                     for parsed_line in iter():
                         if parsed_line is None: