Abdominal pain caused by uterine contractions after miscarriage can be relieved by hot compresses, appropriate massage and medication, but abdominal pain caused by infection requires anti-infection treatment. 1. Physiological reasons: miscarriage refers to the termination of pregnancy after 12 weeks of gestation due to various reasons, will be due to uterine contractions and cause pain in the lower abdomen, which is a normal phenomenon, generally do not need special treatment, but for those who can not tolerate can be given a hot compresses, appropriate massage of the lower abdomen and other methods to ease the pain, and need to be given to the ibuprofen and other medications to relieve pain if necessary. 2. Infection: When the uterine cavity is infected after the miscarriage, it will also cause pain in the lower abdomen, accompanied by an increase in the amount of discharge and odor, fever and other symptoms, ultrasonography, blood tests and so on to assist in the diagnosis. Cefuroxime sodium and tinidazole should be given as prescribed by the doctor for anti-infection treatment. In clinical practice, when abdominal pain after miscarriage, you can go to the hospital to find out the cause and actively deal with it.