diff --git a/paddlespeech/s2t/exps/deepspeech2/bin/train.py b/paddlespeech/s2t/exps/deepspeech2/bin/train.py
index fee7079d9abb4d514e756a1ca4bcd8cd4449bc66..2c9942f9b35af051471004c6b09312c619fa87c2 100644
--- a/paddlespeech/s2t/exps/deepspeech2/bin/train.py
+++ b/paddlespeech/s2t/exps/deepspeech2/bin/train.py
@@ -31,12 +31,6 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
-    parser.add_argument(
-        '--nxpu',
-        type=int,
-        default=0,
-        choices=[0, 1],
-        help="if nxpu == 0 and ngpu == 0, use cpu.")
     args = parser.parse_args()
     print_arguments(args, globals())
 
diff --git a/paddlespeech/s2t/training/cli.py b/paddlespeech/s2t/training/cli.py
index bb85732a6f7f33ee9c5f2f7febabcd7912b78374..1b6bec8a801ecf739fc0efd9ce827df97b1c1591 100644
--- a/paddlespeech/s2t/training/cli.py
+++ b/paddlespeech/s2t/training/cli.py
@@ -82,6 +82,12 @@ def default_argument_parser(parser=None):
         type=int,
         default=1,
         help="number of parallel processes. 0 for cpu.")
+    train_group.add_argument(
+        '--nxpu',
+        type=int,
+        default=0,
+        choices=[0, 1],
+        help="if nxpu == 0 and ngpu == 0, use cpu.")
     train_group.add_argument(
         "--config", metavar="CONFIG_FILE", help="config file.")
     train_group.add_argument(