After sleeping with a boy stomach pain diagnosed as painful intercourse, painful intercourse has many reasons, need to make identification and treatment, the most common is the improper posture of sexual intercourse led to a slight abrasion of the vagina or vulva, to do gynecological examination, sometimes the damage site will be seen, do not need special treatment, will get better on their own, but also may be associated with pelvic inflammatory disease, endometriosis and other diseases. Pelvic inflammatory disease manifests as chronic abdominal pain, thickening and pressure pain in the adnexal area on examination, which is a specific sign of pelvic inflammatory disease, and anti-infective treatment should be given. Endometriosis manifests as obvious dysmenorrhea, and tender nodules can be palpated in the area of the posterior vaginal vault on examination. For endometriosis, appropriate specific treatment should be given.