diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/README.cn.md b/doc/fluid/user_guides/nlp_case/understand_sentiment/README.cn.md
index 8f35f06c73998b3822f6a7c2e53cd14fc5e6b3f5..ce9cd776d6d4b726065f511abf720757764e8fe2 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/README.cn.md
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/README.cn.md
@@ -268,12 +268,12 @@ print("Loading IMDB word dict....")
 word_dict = paddle.dataset.imdb.word_dict()
 
 print ("Reading training data....")
-train_reader = paddle.batch(
-    paddle.reader.shuffle(
+train_reader = fluid.io.batch(
+    fluid.io.shuffle(
         paddle.dataset.imdb.train(word_dict), buf_size=25000),
     batch_size=BATCH_SIZE)
 print("Reading testing data....")
-test_reader = paddle.batch(
+test_reader = fluid.io.batch(
     paddle.dataset.imdb.test(word_dict), batch_size=BATCH_SIZE)
 ```
 word_dict是一个字典序列，是词和label的对应关系，运行下一行可以看到具体内容：
diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/README.md b/doc/fluid/user_guides/nlp_case/understand_sentiment/README.md
index 4a91a5c39927466f2e8ea6b90017496986f30473..5e18077cec00eae50663f4523841dfbb6eeb9aca 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/README.md
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/README.md
@@ -257,12 +257,12 @@ print("Loading IMDB word dict....")
 word_dict = paddle.dataset.imdb.word_dict()
 
 print ("Reading training data....")
-train_reader = paddle.batch(
-    paddle.reader.shuffle(
+train_reader = fluid.io.batch(
+    fluid.io.shuffle(
         paddle.dataset.imdb.train(word_dict), buf_size=25000),
     batch_size=BATCH_SIZE)
 print("Reading testing data....")
-test_reader = paddle.batch(
+test_reader = fluid.io.batch(
     paddle.dataset.imdb.test(word_dict), batch_size=BATCH_SIZE)
 ```
 Word_dict is a dictionary sequence, which is the correspondence between words and labels. You can see it specifically by running the next code:
diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/index.cn.html b/doc/fluid/user_guides/nlp_case/understand_sentiment/index.cn.html
index 7c551554a1b94f934af0897c6847222e77873068..4af2290740ecebcdedff52a383408aa50e13fdf0 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/index.cn.html
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/index.cn.html
@@ -310,12 +310,12 @@ print("Loading IMDB word dict....")
 word_dict = paddle.dataset.imdb.word_dict()
 
 print ("Reading training data....")
-train_reader = paddle.batch(
-    paddle.reader.shuffle(
+train_reader = fluid.io.batch(
+    fluid.io.shuffle(
         paddle.dataset.imdb.train(word_dict), buf_size=25000),
     batch_size=BATCH_SIZE)
 print("Reading testing data....")
-test_reader = paddle.batch(
+test_reader = fluid.io.batch(
     paddle.dataset.imdb.test(word_dict), batch_size=BATCH_SIZE)
 ```
 word_dict是一个字典序列，是词和label的对应关系，运行下一行可以看到具体内容：
diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/index.html b/doc/fluid/user_guides/nlp_case/understand_sentiment/index.html
index c363ba148af0835c623ddee7068eb05f0b4b7e0d..45604f13c72ae2a40f6b5f971ea27ee2f65f1048 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/index.html
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/index.html
@@ -299,12 +299,12 @@ print("Loading IMDB word dict....")
 word_dict = paddle.dataset.imdb.word_dict()
 
 print ("Reading training data....")
-train_reader = paddle.batch(
-    paddle.reader.shuffle(
+train_reader = fluid.io.batch(
+    fluid.io.shuffle(
         paddle.dataset.imdb.train(word_dict), buf_size=25000),
     batch_size=BATCH_SIZE)
 print("Reading testing data....")
-test_reader = paddle.batch(
+test_reader = fluid.io.batch(
     paddle.dataset.imdb.test(word_dict), batch_size=BATCH_SIZE)
 ```
 Word_dict is a dictionary sequence, which is the correspondence between words and labels. You can see it specifically by running the next code:
diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/train_conv.py b/doc/fluid/user_guides/nlp_case/understand_sentiment/train_conv.py
index 765db3f12a85f5957cbbc4b9093e9c6e7a1523f2..74547461500e5532e44208ef2d589984a20320e8 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/train_conv.py
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/train_conv.py
@@ -88,16 +88,16 @@ def train(use_cuda, params_dirname):
 
     print("Reading training data....")
     if args.enable_ce:
-        train_reader = paddle.batch(
+        train_reader = fluid.io.batch(
             paddle.dataset.imdb.train(word_dict), batch_size=BATCH_SIZE)
     else:
-        train_reader = paddle.batch(
-            paddle.reader.shuffle(
+        train_reader = fluid.io.batch(
+            fluid.io.shuffle(
                 paddle.dataset.imdb.train(word_dict), buf_size=25000),
             batch_size=BATCH_SIZE)
 
     print("Reading testing data....")
-    test_reader = paddle.batch(
+    test_reader = fluid.io.batch(
         paddle.dataset.imdb.test(word_dict), batch_size=BATCH_SIZE)
 
     feed_order = ['words', 'label']
diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/train_dyn_rnn.py b/doc/fluid/user_guides/nlp_case/understand_sentiment/train_dyn_rnn.py
index c28b7b668026b533ecce5a4a3f45fe1adb74acbc..78f3d64b43dc50efe195615016d5e92f2d40e9e5 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/train_dyn_rnn.py
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/train_dyn_rnn.py
@@ -79,16 +79,16 @@ def train(use_cuda, params_dirname):
 
     print("Reading training data....")
     if args.enable_ce:
-        train_reader = paddle.batch(
+        train_reader = fluid.io.batch(
             paddle.dataset.imdb.train(word_dict), batch_size=BATCH_SIZE)
     else:
-        train_reader = paddle.batch(
-            paddle.reader.shuffle(
+        train_reader = fluid.io.batch(
+            fluid.io.shuffle(
                 paddle.dataset.imdb.train(word_dict), buf_size=25000),
             batch_size=BATCH_SIZE)
 
     print("Reading testing data....")
-    test_reader = paddle.batch(
+    test_reader = fluid.io.batch(
         paddle.dataset.imdb.test(word_dict), batch_size=BATCH_SIZE)
 
     feed_order = ['words', 'label']
diff --git a/doc/fluid/user_guides/nlp_case/understand_sentiment/train_stacked_lstm.py b/doc/fluid/user_guides/nlp_case/understand_sentiment/train_stacked_lstm.py
index e7635ccfe894b4bd954ac2c01c2edd22475ca228..5878c7f738557e756e816b78d24af0c16b2b48bd 100644
--- a/doc/fluid/user_guides/nlp_case/understand_sentiment/train_stacked_lstm.py
+++ b/doc/fluid/user_guides/nlp_case/understand_sentiment/train_stacked_lstm.py
@@ -99,11 +99,11 @@ def train(use_cuda, params_dirname):
     print("Reading training data....")
 
     if args.enable_ce:
-        train_reader = paddle.batch(
+        train_reader = fluid.io.batch(
             paddle.dataset.imdb.train(word_dict), batch_size=BATCH_SIZE)
     else:
-        train_reader = paddle.batch(
-            paddle.reader.shuffle(
+        train_reader = fluid.io.batch(
+            fluid.io.shuffle(
                 paddle.dataset.imdb.train(word_dict), buf_size=25000),
             batch_size=BATCH_SIZE)