diff --git a/configs/yolov5/yolov5_s-v61_syncbn_fast_1xb4-300e_balloon.py b/configs/yolov5/yolov5_s-v61_syncbn_fast_1xb4-300e_balloon.py
index 52ebf99c..c1c57b28 100644
--- a/configs/yolov5/yolov5_s-v61_syncbn_fast_1xb4-300e_balloon.py
+++ b/configs/yolov5/yolov5_s-v61_syncbn_fast_1xb4-300e_balloon.py
@@ -14,6 +14,7 @@ metainfo = {
 
 train_dataloader = dict(
     batch_size=train_batch_size_per_gpu,
+    num_workers=train_num_workers,
     dataset=dict(
         data_root=data_root,
         metainfo=metainfo,
diff --git a/docs/zh_cn/user_guides/yolov5_tutorial.md b/docs/zh_cn/user_guides/yolov5_tutorial.md
index 15a2c9e6..2ca714a7 100644
--- a/docs/zh_cn/user_guides/yolov5_tutorial.md
+++ b/docs/zh_cn/user_guides/yolov5_tutorial.md
@@ -55,6 +55,7 @@ metainfo = {
 
 train_dataloader = dict(
     batch_size=train_batch_size_per_gpu,
+    num_workers=train_num_workers,
     dataset=dict(
         data_root=data_root,
         metainfo=metainfo,