The causes of postmenopausal pain during sexual intercourse are considered to be related to the decrease in estrogen level, decrease in vaginal secretion, and age-related vaginitis. 1. Decrease in estrogen level: After menopause, there will be a decline in ovarian function and estrogen level in the body, which will result in atrophy of the vaginal mucosa, and there may be obvious pain and other uncomfortable symptoms during sexual intercourse. 2. Decrease in vaginal secretion: postmenopausal women may be affected by the hormone level in the body, resulting in a decrease in vaginal secretion and a lack of lubrication, so there will be obvious pain symptoms during sex. 3. Age-related vaginitis: mainly due to the decline in hormone levels and pathogenic microbial infections, so it will cause postmenopausal women vulvar itching, vaginal dryness and burning and painful sexual intercourse. Postmenopausal sexual pain may also have other causes, need to cooperate with the doctor to improve the examination to determine the cause of the disease before handling and treatment.