diff --git a/train.py b/train.py
index 4718e94..75209b2 100644
--- a/train.py
+++ b/train.py
@@ -306,7 +306,7 @@ def get_midi_list(path):
         "--data-val-split",
         type=int,
         default=128,
-        help="split length for validation",
+        help="the number of midi files divided into the validation set",
     )
     parser.add_argument(
         "--max-len",
@@ -378,7 +378,7 @@ def get_midi_list(path):
         "--log-step", type=int, default=1, help="log training loss every n steps"
     )
     parser.add_argument(
-        "--val-step", type=int, default=1600, help="valid and save every n steps"
+        "--val-step", type=int, default=1600, help="valid and save every n steps, set 0 to valid and save every epoch"
     )
 
     opt = parser.parse_args()
@@ -467,7 +467,7 @@ def get_midi_list(path):
         num_nodes=opt.nodes,
         max_steps=opt.max_step,
         benchmark=not opt.disable_benchmark,
-        val_check_interval=opt.val_step,
+        val_check_interval=opt.val_step or None,
         log_every_n_steps=1,
         strategy="auto",
         callbacks=callbacks,