diff --git a/fastNLP/api/processor.py b/fastNLP/api/processor.py
index a01810ac..300dd8ac 100644
--- a/fastNLP/api/processor.py
+++ b/fastNLP/api/processor.py
@@ -73,16 +73,16 @@ class FullSpaceToHalfSpaceProcessor(Processor):
                 if char in self.convert_map:
                     char = self.convert_map[char]
                 new_sentence[idx] = char
-            ins[self.field_name].text = ''.join(new_sentence)
+            ins[self.field_name] = ''.join(new_sentence)
         return dataset
 
 
 class IndexerProcessor(Processor):
-    def __init__(self, vocab, field_name):
+    def __init__(self, vocab, field_name, new_added_field_name):
 
         assert isinstance(vocab, Vocabulary), "Only Vocabulary class is allowed, not {}.".format(type(vocab))
 
-        super(IndexerProcessor, self).__init__(field_name, None)
+        super(IndexerProcessor, self).__init__(field_name, new_added_field_name)
         self.vocab = vocab
 
     def set_vocab(self, vocab):
@@ -93,9 +93,9 @@ class IndexerProcessor(Processor):
     def process(self, dataset):
         assert isinstance(dataset, DataSet), "Only Dataset class is allowed, not {}.".format(type(dataset))
         for ins in dataset:
-            tokens = ins[self.field_name].content
+            tokens = ins[self.field_name]
             index = [self.vocab.to_index(token) for token in tokens]
-            ins[self.field_name]._index = index
+            ins[self.new_added_field_name] = index
 
         return dataset
 
@@ -110,7 +110,7 @@ class VocabProcessor(Processor):
         for dataset in datasets:
             assert isinstance(dataset, DataSet), "Only Dataset class is allowed, not {}.".format(type(dataset))
             for ins in dataset:
-                tokens = ins[self.field_name].content
+                tokens = ins[self.field_name]
                 self.vocab.update(tokens)
 
     def get_vocab(self):
diff --git a/reproduction/chinese_word_segment/process/cws_processor.py b/reproduction/chinese_word_segment/process/cws_processor.py
index 3e6b9c3b..c025895f 100644
--- a/reproduction/chinese_word_segment/process/cws_processor.py
+++ b/reproduction/chinese_word_segment/process/cws_processor.py
@@ -5,9 +5,8 @@ import re
 from fastNLP.core.field import SeqLabelField
 from fastNLP.core.vocabulary import Vocabulary
 from fastNLP.core.dataset import DataSet
-
 from fastNLP.api.processor import Processor
-from reproduction.chinese_word_segment.process.span_converter import *
+from reproduction.chinese_word_segment.process.span_converter import SpanConverter
 
 _SPECIAL_TAG_PATTERN = '<[a-zA-Z]+>'
 
@@ -25,11 +24,7 @@ class SpeicalSpanProcessor(Processor):
             sentence = ins[self.field_name].text
             for span_converter in self.span_converters:
                 sentence = span_converter.find_certain_span_and_replace(sentence)
-            if self.new_added_field_name!=self.field_name:
-                new_text_field = TextField(sentence, is_target=False)
-                ins[self.new_added_field_name] = new_text_field
-            else:
-                ins[self.field_name].text = sentence
+            ins[self.new_added_field_name] = sentence
 
         return dataset
 
diff --git a/reproduction/chinese_word_segment/train_context.py b/reproduction/chinese_word_segment/train_context.py
index 691a97a6..de6513d3 100644
--- a/reproduction/chinese_word_segment/train_context.py
+++ b/reproduction/chinese_word_segment/train_context.py
@@ -1,13 +1,12 @@
 
 from fastNLP.core.instance import Instance
 from fastNLP.core.dataset import DataSet
-
-
 from fastNLP.api.pipeline import Pipeline
+from fastNLP.api.processor import FullSpaceToHalfSpaceProcessor
+
 from reproduction.chinese_word_segment.process.cws_processor import *
-from reproduction.chinese_word_segment.utils import cut_long_training_sentences
-from reproduction.chinese_word_segment.process.span_converter import *
-from reproduction.chinese_word_segment.io import NaiveCWSReader
+from reproduction.chinese_word_segment.process.span_converter import AlphaSpanConverter, DigitSpanConverter
+from reproduction.chinese_word_segment.io.cws_reader import NaiveCWSReader
 
 
 tr_filename = ''
@@ -15,9 +14,8 @@ dev_filename = ''
 
 reader = NaiveCWSReader()
 
-tr_dataset = reader.load(tr_filename, cut=True)
-de_dataset = reader.load(dev_filename)
-
+tr_sentences = reader.load(tr_filename, cut_long_sent=True)
+dev_sentences = reader.load(dev_filename)
 
 
 # TODO 如何组建成为一个Dataset
@@ -32,7 +30,7 @@ def construct_dataset(sentences):
 
 
 tr_dataset = construct_dataset(tr_sentences)
-dev_dataset = construct_dataset(dev_sentence)
+dev_dataset = construct_dataset(dev_sentences)
 
 # 1. 准备processor
 fs2hs_proc = FullSpaceToHalfSpaceProcessor('raw_sentence')