Less pubic hair after menopause is generally a normal phenomenon, but it may also be caused by lesions in the pubic hair follicles, such as vulvar folliculitis, pubic lice dermatitis and other diseases. After menopause, women’s body functions are in a downward trend, due to the gradual decrease of sex hormone secretion in the body after menopause, which will lead to the slow shrinkage and withering of the pubic hair, resulting in the phenomenon of postmenopausal pubic hair becoming fewer or falling off. If there are no other abnormalities in the body, it is usually a normal phenomenon. If the patient after menopause pubic hair follicle lesions, such as vulvar folliculitis, pubic lice dermatitis and other diseases will lead to a large number of patients with pubic hair loss, resulting in the appearance of pubic hair scarcity. It is recommended that patients must keep the vulva clean in their daily life, and also pay attention to the localization of pubic hair to reduce the production of disease. Clinically, when the phenomenon of postmenopausal pubic hair becomes less, it is recommended to go to the hospital in time to find out the cause of the disease, and give standardized treatment.