diff --git a/tutorials/source_en/advanced_use/nlp_application.md b/tutorials/source_en/advanced_use/nlp_application.md
index 5f3138e406c11951cce61bc5e58925415f714d59..d8b9a4e0558e0c1ce7dc05f1019772e5ec3e5933 100644
--- a/tutorials/source_en/advanced_use/nlp_application.md
+++ b/tutorials/source_en/advanced_use/nlp_application.md
@@ -96,6 +96,7 @@ The following are the required public modules and MindSpore modules and library
 ```python
 import os
 import shutil
+import glob
 import math
 import argparse
 import json
@@ -296,6 +297,8 @@ from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMoni
         writer.commit()
 
     print("============== Starting Data Pre-processing ==============")
+    for infile in glob.glob(os.path.join(args.preprocess_path, 'aclImdb_*.mindrecord*')):
+        os.remove(infile)
     shutil.rmtree(args.preprocess_path)
     os.mkdir(args.preprocess_path)
     convert_to_mindrecord(cfg.embed_size, args.aclimdb_path, args.preprocess_path, args.glove_path)
diff --git a/tutorials/source_zh_cn/advanced_use/nlp_application.md b/tutorials/source_zh_cn/advanced_use/nlp_application.md
index ea9cb100787c9c393d6faf4a64da7d5ab6778466..1e58fbc0484bab51143beef8a9d1a752b3ef25e7 100644
--- a/tutorials/source_zh_cn/advanced_use/nlp_application.md
+++ b/tutorials/source_zh_cn/advanced_use/nlp_application.md
@@ -95,6 +95,7 @@ $F1分数 = (2 * Precision * Recall) / (Precision + Recall)$
 ```python
 import os
 import shutil
+import glob
 import math
 import argparse
 import json
@@ -295,6 +296,8 @@ from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMoni
         writer.commit()
 
     print("============== Starting Data Pre-processing ==============")
+    for infile in glob.glob(os.path.join(args.preprocess_path, 'aclImdb_*.mindrecord*')):
+        os.remove(infile)
     shutil.rmtree(args.preprocess_path)
     os.mkdir(args.preprocess_path)
     convert_to_mindrecord(cfg.embed_size, args.aclimdb_path, args.preprocess_path, args.glove_path)
diff --git a/tutorials/tutorial_code/lstm/main.py b/tutorials/tutorial_code/lstm/main.py
index dde13eb85f6a583bca848aad66a596843a75f8c0..c4cead5f1c15e49163c64a7a92adbad35fc9447e 100644
--- a/tutorials/tutorial_code/lstm/main.py
+++ b/tutorials/tutorial_code/lstm/main.py
@@ -18,6 +18,7 @@ The sample can be run on GPU.
 """
 import os
 import shutil
+import glob
 import math
 import argparse
 import json
@@ -304,6 +305,8 @@ if __name__ == '__main__':
 
     if args.preprocess == 'true':
         print("============== Starting Data Pre-processing ==============")
+        for infile in glob.glob(os.path.join(args.preprocess_path, 'aclImdb_*.mindrecord*')):
+            os.remove(infile)
         shutil.rmtree(args.preprocess_path)
         os.mkdir(args.preprocess_path)
         convert_to_mindrecord(cfg.embed_size, args.aclimdb_path, args.preprocess_path, args.glove_path)