diff --git a/ppdet/engine/trainer.py b/ppdet/engine/trainer.py
index 066cb5f670eadc0ee1a74ef0ca34d4a86d40ea4a..154d1758117f3e96aa5dc2d06dfcf3428334d2ab 100644
--- a/ppdet/engine/trainer.py
+++ b/ppdet/engine/trainer.py
@@ -460,7 +460,6 @@ class Trainer(object):
             self.loader.dataset.set_epoch(epoch_id)
             model.train()
             iter_tic = time.time()
-            print("loader len:", len(self.loader))
             for step_id, data in enumerate(self.loader):
                 self.status['data_time'].update(time.time() - iter_tic)
                 self.status['step_id'] = step_id