The symptoms of stomach pain after miscarriage may be physiological or pathological.1. Uterine contraction will accompany the process of uterine regeneration after miscarriage. The abdominal pain caused by the contraction of the uterus is a kind of physiological abdominal pain, which is paroxysmal, and can be relieved by appropriate hot compresses and massage. 2, some women after miscarriage, because the stagnant blood in the uterine cavity can not be discharged smoothly, and the degree of contraction of the uterus is aggravated, there are more intense abdominal pain symptoms, in this case need to cooperate with appropriate drug treatment. 3, because of the miscarriage after not paying attention to personal hygiene, or premature sex, the abdominal pain symptoms. Or premature sexual life, resulting in pathogenic microbial invasion and infection, causing pelvic inflammatory disease and endometritis, which can also cause pain and discomfort in the small abdomen, often accompanied by abnormal vaginal secretions.