Perineum cracking may be clinically caused by the following reasons. The first one is due to local inflammation of the mucous membrane of the vulva skin, resulting in linear fissures in the perineum, and it is recommended to actively treat the inflammation of the vulva by applying erythromycin ointment or aureomycin ophthalmic ointment locally. Most of the inflammation is quickly controlled after the medication is applied, and the linear fissure will heal quickly. If the lateral perineal incision wound is cracked, it is recommended to analyze the specific situation and go to the hospital in time for the corresponding examination. If the wound is still locally fresh, sutures can be continued. If the wound is not locally fresh, clinical observation is recommended and sutures will be given when necessary. In either case, it is recommended to keep the area clean during this period, change sanitary napkins regularly, and change underwear regularly to avoid the possibility of re-infection, and it is also recommended not to eat spicy and sour food or drink alcohol in the diet.