If the labia are large on one side and small on the other, most of them are caused by congenital development. As long as it does not affect the function and there is no uncomfortable feeling, there is no need to intervene. However, if one side of the labia is too enlarged and causes friction when walking, which brings inconvenience to life, surgery can be considered to remove the enlarged part. It is recommended to go to the hospital after 3-7 days of menstruation to have a checkup and have the operation done when the white belt routine is normal and there is no inflammation. After the surgery, pay attention to the local hygiene and strengthen the care.