Cracks under the pubic area may be caused by vulvovaginitis, vulvovaginal pseudomycosis and other diseases. 1. Vulvovaginitis: usually due to pathogen infection, physical or chemical stimulation and other conditions, and also with obesity, long-term wearing tight chemical fiber underwear and other factors. General non-specific vulvovaginitis patients in the acute stage will appear vulvar erosion, swelling, congestion and other symptoms, while chronic inflammation patients can be manifested as vulvar skin thickening, roughness, cracks, etc., the patient can also appear under the pubic fissure. 2. Vulvovaginal pseudomycosis: usually due to pseudomycosis infection, and also related to drugs, pregnancy, diabetes, impaired immune system and other factors. Patients often appear vulvar itching, leukorrhea and other symptoms, but also accompanied by vulvar and vaginal burning sensation, vulvar redness and swelling, can be accompanied by scratches, and in severe cases, skin cracking, peeling phenomenon, which can also be manifested as a fissure under the pubic area. It is recommended that patients who have cracks under the pubic area should actively seek medical treatment to find out the cause of the disease and then reasonably treat it.