diff --git a/docs/source/index.rst b/docs/source/index.rst
index d2353839ab0a36a3d27a3af862f7138c4511bbac..7f9c87bdbb8351dd595c0d1df9480d699946f1e3 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -62,9 +62,3 @@ Contents
    :caption: Acknowledgement
 
    asr/reference
-
-
-
-
-
-
diff --git a/paddlespeech/t2s/exps/fastspeech2/train.py b/paddlespeech/t2s/exps/fastspeech2/train.py
index d71292b36a415dae33be6c52cccebaa070ab28f6..10e023d0cbbd60faea4b64ee04f2410a86ffd341 100644
--- a/paddlespeech/t2s/exps/fastspeech2/train.py
+++ b/paddlespeech/t2s/exps/fastspeech2/train.py
@@ -160,9 +160,8 @@ def train_sp(args, config):
     if dist.get_rank() == 0:
         trainer.extend(evaluator, trigger=(1, "epoch"))
         trainer.extend(VisualDL(output_dir), trigger=(1, "iteration"))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
-    # print(trainer.extensions)
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
     trainer.run()
 
 
diff --git a/paddlespeech/t2s/exps/gan_vocoder/hifigan/train.py b/paddlespeech/t2s/exps/gan_vocoder/hifigan/train.py
index 9ac6cbd34e55b5aa65fa2279480157a7064a42b5..c70821e78fe6e4063d74e8c5608ede225ed1b230 100644
--- a/paddlespeech/t2s/exps/gan_vocoder/hifigan/train.py
+++ b/paddlespeech/t2s/exps/gan_vocoder/hifigan/train.py
@@ -231,9 +231,9 @@ def train_sp(args, config):
         trainer.extend(
             evaluator, trigger=(config.eval_interval_steps, 'iteration'))
         trainer.extend(VisualDL(output_dir), trigger=(1, 'iteration'))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots),
-            trigger=(config.save_interval_steps, 'iteration'))
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots),
+        trigger=(config.save_interval_steps, 'iteration'))
 
     print("Trainer Done!")
     trainer.run()
diff --git a/paddlespeech/t2s/exps/gan_vocoder/multi_band_melgan/train.py b/paddlespeech/t2s/exps/gan_vocoder/multi_band_melgan/train.py
index 3d0ff7d35cfa1770221dd628ec1efed036645061..27ffded63b3621c0f2110815b27fd4420ef0bc5a 100644
--- a/paddlespeech/t2s/exps/gan_vocoder/multi_band_melgan/train.py
+++ b/paddlespeech/t2s/exps/gan_vocoder/multi_band_melgan/train.py
@@ -219,9 +219,9 @@ def train_sp(args, config):
         trainer.extend(
             evaluator, trigger=(config.eval_interval_steps, 'iteration'))
         trainer.extend(VisualDL(output_dir), trigger=(1, 'iteration'))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots),
-            trigger=(config.save_interval_steps, 'iteration'))
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots),
+        trigger=(config.save_interval_steps, 'iteration'))
 
     print("Trainer Done!")
     trainer.run()
diff --git a/paddlespeech/t2s/exps/gan_vocoder/parallelwave_gan/train.py b/paddlespeech/t2s/exps/gan_vocoder/parallelwave_gan/train.py
index 46ff67e14373a94399c3c92c9a074cd454e29f93..92de7a2c4e7a04ed28b7b30dfa47be4796acc93f 100644
--- a/paddlespeech/t2s/exps/gan_vocoder/parallelwave_gan/train.py
+++ b/paddlespeech/t2s/exps/gan_vocoder/parallelwave_gan/train.py
@@ -194,11 +194,10 @@ def train_sp(args, config):
         trainer.extend(
             evaluator, trigger=(config.eval_interval_steps, 'iteration'))
         trainer.extend(VisualDL(output_dir), trigger=(1, 'iteration'))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots),
-            trigger=(config.save_interval_steps, 'iteration'))
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots),
+        trigger=(config.save_interval_steps, 'iteration'))
 
-    # print(trainer.extensions.keys())
     print("Trainer Done!")
     trainer.run()
 
diff --git a/paddlespeech/t2s/exps/gan_vocoder/style_melgan/train.py b/paddlespeech/t2s/exps/gan_vocoder/style_melgan/train.py
index b162260d61d34596450e3309094a289156cbcb67..be3ba74251d92cf90be713651837205fa8dc582a 100644
--- a/paddlespeech/t2s/exps/gan_vocoder/style_melgan/train.py
+++ b/paddlespeech/t2s/exps/gan_vocoder/style_melgan/train.py
@@ -212,9 +212,9 @@ def train_sp(args, config):
         trainer.extend(
             evaluator, trigger=(config.eval_interval_steps, 'iteration'))
         trainer.extend(VisualDL(output_dir), trigger=(1, 'iteration'))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots),
-            trigger=(config.save_interval_steps, 'iteration'))
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots),
+        trigger=(config.save_interval_steps, 'iteration'))
 
     print("Trainer Done!")
     trainer.run()
diff --git a/paddlespeech/t2s/exps/speedyspeech/train.py b/paddlespeech/t2s/exps/speedyspeech/train.py
index de0d308bce549dc6f243c2f9db30ae9ef5e7e097..bda5370c1da9ceb1569a27ef068ec57b289e6888 100644
--- a/paddlespeech/t2s/exps/speedyspeech/train.py
+++ b/paddlespeech/t2s/exps/speedyspeech/train.py
@@ -171,8 +171,8 @@ def train_sp(args, config):
     if dist.get_rank() == 0:
         trainer.extend(evaluator, trigger=(1, "epoch"))
         trainer.extend(VisualDL(output_dir), trigger=(1, "iteration"))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
     trainer.run()
 
 
diff --git a/paddlespeech/t2s/exps/tacotron2/train.py b/paddlespeech/t2s/exps/tacotron2/train.py
index bf4c4e01df72112f68046dc4bd2c201058b77c85..69ff80e467ab79a6827560c168316d9c221aa84c 100644
--- a/paddlespeech/t2s/exps/tacotron2/train.py
+++ b/paddlespeech/t2s/exps/tacotron2/train.py
@@ -155,9 +155,8 @@ def train_sp(args, config):
     if dist.get_rank() == 0:
         trainer.extend(evaluator, trigger=(1, "epoch"))
         trainer.extend(VisualDL(output_dir), trigger=(1, "iteration"))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
-    # print(trainer.extensions)
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
     trainer.run()
 
 
diff --git a/paddlespeech/t2s/exps/transformer_tts/train.py b/paddlespeech/t2s/exps/transformer_tts/train.py
index 8695c06a9706a12c7b48fd59acdb5b6c16e572a1..d521ce89607a969ab4145aebfa24c64afc049a50 100644
--- a/paddlespeech/t2s/exps/transformer_tts/train.py
+++ b/paddlespeech/t2s/exps/transformer_tts/train.py
@@ -148,9 +148,8 @@ def train_sp(args, config):
     if dist.get_rank() == 0:
         trainer.extend(evaluator, trigger=(1, "epoch"))
         trainer.extend(VisualDL(output_dir), trigger=(1, "iteration"))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
-    # print(trainer.extensions)
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
     trainer.run()
 
 
diff --git a/paddlespeech/t2s/exps/wavernn/train.py b/paddlespeech/t2s/exps/wavernn/train.py
index c9a6ba01c06b583ebbfb2836ce648d0b58401c59..8661d311d218bda58142a846f3dedce5a07ffabf 100644
--- a/paddlespeech/t2s/exps/wavernn/train.py
+++ b/paddlespeech/t2s/exps/wavernn/train.py
@@ -168,9 +168,9 @@ def train_sp(args, config):
         trainer.extend(
             evaluator, trigger=(config.eval_interval_steps, 'iteration'))
         trainer.extend(VisualDL(output_dir), trigger=(1, 'iteration'))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots),
-            trigger=(config.save_interval_steps, 'iteration'))
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots),
+        trigger=(config.save_interval_steps, 'iteration'))
 
     print("Trainer Done!")
     trainer.run()
diff --git a/paddlespeech/text/exps/ernie_linear/train.py b/paddlespeech/text/exps/ernie_linear/train.py
index 0d730d6666ae3a9ec8290e5c73ebcd45a0842302..22c25e172ce9a1b3fadf4a59b9d27f02cd5332c7 100644
--- a/paddlespeech/text/exps/ernie_linear/train.py
+++ b/paddlespeech/text/exps/ernie_linear/train.py
@@ -135,9 +135,8 @@ def train_sp(args, config):
     if dist.get_rank() == 0:
         trainer.extend(evaluator, trigger=(1, "epoch"))
         trainer.extend(VisualDL(output_dir), trigger=(1, "iteration"))
-        trainer.extend(
-            Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
-    # print(trainer.extensions)
+    trainer.extend(
+        Snapshot(max_size=config.num_snapshots), trigger=(1, 'epoch'))
     trainer.run()