The main reasons for pain are as follows: First, it may be caused by inflammatory reactions, such as vaginitis, pelvic inflammatory disease, endometritis and other diseases, which can directly lead to congestion of the mucous membrane of the pubic area, resulting in painful symptoms. Secondly, the pain may be caused by excessive force or friction during sexual intercourse, and it may also be caused by low vaginal secretion during intercourse and excessive stimulation. Third, it may be caused by urinary system infection or other diseases. When urinary system infection occurs, it will directly affect the normal excretion, resulting in itching, pain, odor and other symptoms in the pubic area, which will have a direct impact on life.