diff --git a/funasr/datasets/preprocessor.py b/funasr/datasets/preprocessor.py
index b303418bd..966cc9449 100644
--- a/funasr/datasets/preprocessor.py
+++ b/funasr/datasets/preprocessor.py
@@ -705,55 +705,73 @@ def join_chinese_and_english(cls, input_list):
         return line   
 
     @classmethod
-    def split_words_jieba(cls, text: str):
-        input_list = text.split()
-        token_list_all = []
-        langauge_list = []
-        token_list_tmp = []
-        language_flag = None
-        for token in input_list:
-            if cls.isEnglish(token) and language_flag == 'Chinese':
-                token_list_all.append(token_list_tmp)
-                langauge_list.append('Chinese')
-                token_list_tmp = []
-            elif not cls.isEnglish(token) and language_flag == 'English':
-                token_list_all.append(token_list_tmp)
-                langauge_list.append('English')
-                token_list_tmp = []
+    def split_words(cls, text: str , seg_jieba: bool):
+        if seg_jieba == True:
+            input_list = text.split()
+            token_list_all = []
+            langauge_list = []
+            token_list_tmp = []
+            language_flag = None
+            for token in input_list:
+                if cls.isEnglish(token) and language_flag == 'Chinese':
+                    token_list_all.append(token_list_tmp)
+                    langauge_list.append('Chinese')
+                    token_list_tmp = []
+                elif not cls.isEnglish(token) and language_flag == 'English':
+                    token_list_all.append(token_list_tmp)
+                    langauge_list.append('English')
+                    token_list_tmp = []
+
+                token_list_tmp.append(token)
+
+                if cls.isEnglish(token):
+                    language_flag = 'English'
+                else:
+                    language_flag = 'Chinese'
 
-            token_list_tmp.append(token)
+            if token_list_tmp:
+                token_list_all.append(token_list_tmp)
+                langauge_list.append(language_flag)
 
-            if cls.isEnglish(token):
-                language_flag = 'English'
-            else:
-                language_flag = 'Chinese'
+            result_list = []
+            for token_list_tmp, language_flag in zip(token_list_all, langauge_list):
+                if language_flag == 'English':
+                    result_list.extend(token_list_tmp)
+                else:
+                    seg_list = jieba.cut(cls.join_chinese_and_english(token_list_tmp), HMM=False)
+                    result_list.extend(seg_list)
 
-        if token_list_tmp:
-            token_list_all.append(token_list_tmp)
-            langauge_list.append(language_flag)
+            return result_list
 
-        result_list = []
-        for token_list_tmp, language_flag in zip(token_list_all, langauge_list):
-            if language_flag == 'English':
-                result_list.extend(token_list_tmp)
-            else:
-                seg_list = jieba.cut(cls.join_chinese_and_english(token_list_tmp), HMM=False)
-                result_list.extend(seg_list)
+        else:
+            words = []
+            segs = text.split()
+            for seg in segs:
+                # There is no space in seg.
+                current_word = ""
+                for c in seg:
+                    if len(c.encode()) == 1:
+                        # This is an ASCII char.
+                        current_word += c
+                    else:
+                        # This is a Chinese char.
+                        if len(current_word) > 0:
+                            words.append(current_word)
+                            current_word = ""
+                        words.append(c)
+                if len(current_word) > 0:
+                    words.append(current_word)
+            return words
 
-        return result_list
 
     def __call__(
             self, uid: str, data: Dict[str, Union[list, str, np.ndarray]]
     ) -> Dict[str, Union[list, np.ndarray]]:
         # Split words.
-        if isinstance(data[self.text_name], str):
-            if self.seg_jieba:
-  #              jieba.load_userdict(seg_dict_file)
-                split_text = self.split_words_jieba(data[self.text_name])
-            else:
-                split_text = self.split_words(data[self.text_name])
-        else:
-            split_text = data[self.text_name]
+        data_in = data[self.text_name]
+        if isinstance(data[self.text_name], list):
+            data_in = " ".join(data[self.text_name])
+        split_text = self.split_words(data_in, self.seg_jieba)
         data[self.text_name] = " ".join(split_text)
         data = self._speech_process(data)
         data = self._text_process(data)