When there is pain inside during intercourse, it is important to distinguish whether the pain is in the vagina or in the lower abdomen. Usually vaginal pain is due to inflammation of the vagina, vaginal wall congestion, edema will appear after intercourse vaginal wall pain, as well as there will be abnormal discharge. In addition, pain after intercourse can also occur when the vagina becomes dry, secretions decrease, and elasticity decreases due to diminished ovarian function. If the pain in the lower abdomen, it may be caused by pelvic inflammatory disease, in mild cases, there are usually no symptoms, but in serious cases, there will be pain in the lower abdomen, which can be persistent or progressive aggravation, and even fever and other manifestations. In addition, abdominal pain during coitus, can also be seen in endometriosis, adenomyosis, in coitus penis touch pelvic sacral fossa ectopic nodule caused by abdominal pain, so if there is a pain in the inside of the coitus, it is recommended to go to the regular hospital to find out the cause.