If there is a cleft in the labia, it is often clinically caused by the following reasons: first, inflammatory reaction of the external cause itself, such as dermatitis, will cause a local cleft in the labia, which will cause pain, it is recommended to actively treat dermatitis, and if there is eczema, actively treat eczema, you can apply Paregoric ointment locally for treatment. Secondly, inflammation of the vagina, when there is local inflammation of the vagina, it will lead to a large amount of exudation, and this secretion will flow to the vulva, causing a local inflammatory reaction of the labia, which will cause a linear fissure, accompanied by local redness, swelling, heat and pain, it is recommended to actively treat vaginitis and keep the vulva clean. It is recommended that women pay attention to sexual and menstrual hygiene in their daily life and change their underwear regularly to reduce inflammation of the reproductive tract.