diff --git a/paddlepalm/backbone/ernie.py b/paddlepalm/backbone/ernie.py
index 5619377f044ed90cfbfba2886326078b38321bb8..c8a29c9015de864ba188cfa9c673cc217eb55b59 100644
--- a/paddlepalm/backbone/ernie.py
+++ b/paddlepalm/backbone/ernie.py
@@ -31,7 +31,7 @@ class ERNIE(Backbone):
     
     def __init__(self, hidden_size, num_hidden_layers, num_attention_heads, vocab_size, \
           max_position_embeddings, sent_type_vocab_size, task_type_vocab_size, \
-          hidden_act, hidden_dropout_prob, attention_probs_dropout_prob, initializer_range, is_pairwise=False, phase='train'):
+          hidden_act, hidden_dropout_prob, attention_probs_dropout_prob, initializer_range, is_pairwise=False, use_task_emb=True, phase='train'):
 
         # self._is_training = phase == 'train' # backbone一般不用关心运行阶段，因为outputs在任何阶段基本不会变
  
@@ -54,6 +54,7 @@ class ERNIE(Backbone):
         self._task_emb_name = "task_embedding"
         self._emb_dtype = "float32"
         self._is_pairwise = is_pairwise
+        self._use_task_emb = use_task_emb
         self._phase=phase
         self._param_initializer = fluid.initializer.TruncatedNormal(
             scale=initializer_range)
@@ -85,6 +86,10 @@ class ERNIE(Backbone):
             task_type_vocab_size = config['task_type_vocab_size']
         else:
             task_type_vocab_size = config['type_vocab_size']
+        if 'use_task_emb' in config:
+            use_task_emb = config['use_task_emb']
+        else:
+            use_task_emb = True
         hidden_act = config['hidden_act']
         hidden_dropout_prob = config['hidden_dropout_prob']
         attention_probs_dropout_prob = config['attention_probs_dropout_prob']
@@ -96,7 +101,7 @@ class ERNIE(Backbone):
         
         return cls(hidden_size, num_hidden_layers, num_attention_heads, vocab_size, \
           max_position_embeddings, sent_type_vocab_size, task_type_vocab_size, \
-          hidden_act, hidden_dropout_prob, attention_probs_dropout_prob, initializer_range, is_pairwise, phase=phase)
+          hidden_act, hidden_dropout_prob, attention_probs_dropout_prob, initializer_range, is_pairwise, use_task_emb=use_task_emb, phase=phase)
 
     @property
     def inputs_attr(self):
@@ -180,15 +185,16 @@ class ERNIE(Backbone):
             emb_out = emb_out + position_emb_out
             emb_out = emb_out + sent_emb_out
 
-            task_emb_out = fluid.embedding(
-                task_ids,
-                size=[self._task_types, self._emb_size],
-                dtype=self._emb_dtype,
-                param_attr=fluid.ParamAttr(
-                    name=scope_name+self._task_emb_name,
-                    initializer=self._param_initializer))
+            if self._use_task_emb:
+                task_emb_out = fluid.embedding(
+                    task_ids,
+                    size=[self._task_types, self._emb_size],
+                    dtype=self._emb_dtype,
+                    param_attr=fluid.ParamAttr(
+                        name=scope_name+self._task_emb_name,
+                        initializer=self._param_initializer))
 
-            emb_out = emb_out + task_emb_out
+                emb_out = emb_out + task_emb_out
 
             emb_out = pre_process_layer(
                 emb_out, 'nd', self._prepostprocess_dropout, name=scope_name+'pre_encoder')
diff --git a/paddlepalm/head/base_head.py b/paddlepalm/head/base_head.py
index f71f491003b58a4a563babdd33931a1b069ce61a..c9a0ee572c5afb4fa18490126f27687441eb65a1 100644
--- a/paddlepalm/head/base_head.py
+++ b/paddlepalm/head/base_head.py
@@ -122,11 +122,11 @@ class Head(object):
             output_dir: 积累结果的保存路径。
         """
         if output_dir is not None:
-            for i in self._results_buffer:
-                print(i)
-        else:
             if not os.path.exists(output_dir):
                 os.makedirs(output_dir)
             with open(os.path.join(output_dir, self._phase), 'w') as writer:
                 for i in self._results_buffer:
                     writer.write(json.dumps(i)+'\n')
+        else:
+            return self._results_buffer
+
diff --git a/paddlepalm/head/match.py b/paddlepalm/head/match.py
index 4921f6cca5f7785e17a061646dcfd38431dfb5c7..5fb828bfa7a43aa7686cad275ee93ba778954e85 100644
--- a/paddlepalm/head/match.py
+++ b/paddlepalm/head/match.py
@@ -159,8 +159,6 @@ class Match(Head):
             else:
                 return {'probs': pos_score}
         
-
-
     def batch_postprocess(self, rt_outputs):
         if not self._is_training:
             probs = []
@@ -170,6 +168,10 @@ class Match(Head):
             if self._learning_strategy == 'pointwise':
                 logits = rt_outputs['logits']
                 self._preds_logits.extend(logits.tolist())
+
+    def reset(self):
+        self._preds_logits = []
+        self._preds = []
         
     def epoch_postprocess(self, post_inputs, output_dir=None):
         # there is no post_inputs needed and not declared in epoch_inputs_attrs, hence no elements exist in post_inputs
diff --git a/paddlepalm/trainer.py b/paddlepalm/trainer.py
index de45bcca9bc81bd652a5ff6c65999d694130c381..600951f29cf58767bf07fd74c554d2d05ea65c8c 100644
--- a/paddlepalm/trainer.py
+++ b/paddlepalm/trainer.py
@@ -587,6 +587,9 @@ class Trainer(object):
         results = self._pred_head.epoch_postprocess({'reader':reader_outputs}, output_dir=output_dir)
         return results
 
+    def reset_buffer(self):
+        self._pred_head.reset()
+
     def _check_phase(self, phase):
         assert phase in ['train', 'predict'], "Supported phase: train, predict,"