Female lower body cracks may be caused by vulvar malnutrition, vaginitis, childbirth and other reasons. 1. Vulvar malnutrition: Vulvar malnutrition occurs when the color of the vulvar skin decreases, the elasticity of the local skin of the vulva decreases, and the vulvar atrophy leads to the appearance of fissures on the lower body of women, which can be accompanied by more serious vulvar itching at the same time. 2. Vaginitis: due to inflammation of the vagina itself, pathogenic bacteria infections such as bacterial vaginitis, trichomonas vaginitis, making the thin vaginal secretions with a fishy odor increase, secretions flow to the vulva to appear local inflammatory reaction, resulting in the skin will appear linear fissure. 3. Childbirth: women’s lower body with fissures refers to the anus and external genitalia between the soft tissues are severely traumatized, common in childbirth women, and delivery too fast, fetal head is too large or fetal position is not correct, maternal exertion and other factors. If there is a female lower body fissure, to go to the hospital in time, with the doctor standardized diagnosis and treatment.