The uterus is a bit distended and painful, often caused by the following reasons: first, the most common clinical reason chronic pelvic inflammatory disease, due to recurrent episodes of chronic pelvic inflammatory disease, will cause some of the pelvic adhesions, exudation, will lead to recurrent lower abdominal distension and pain. Second, endometriosis, due to endometriosis lesions with the ovarian cycle, and periodic bleeding, will lead to pelvic adhesions, resulting in pain in the uterus. Thirdly, when pelvic tumor presses on the surrounding organs, it will cause local distension and pain. Therefore, when the uterus is swollen and painful, it is better to go to hospital for examination to understand what causes the swelling and pain, and to give clinical intervention and treatment.