Delayed menstruation with abdominal pain is mainly considered in three cases: first, a priori miscarriage or ectopic pregnancy and lead to, reproductive women have delayed menstruation must be ruled out the possibility of pregnancy, if the test for pregnancy with abdominal pain need to check the blood chorionic gonadotropin progesterone to determine the activity of the gestational sacs, and ultrasound to determine whether it is the uterine cavity or extra-uterine pregnancy, according to the situation, you can choose to preserve the fetus or kill the embryo. The treatment can be either fertility preservation or embryocide. Secondly, when menstruation is about to start, the uterus will be congested before menstruation, and the increase of prostaglandin content will cause hidden pain and discomfort in the abdomen. Third, patients with delayed menstruation combined with intestinal diseases or urinary tract diseases and cause abdominal pain, most often with stool abnormalities or urinary abnormalities, if the delayed menstruation within a week, do not need to be treated, more than a week need to do ultrasound according to the situation to promote menstruation, need to be based on the patient’s other clinical symptoms and signs of intestinal and urinary system examination.