The main causes of abdominal pain in early pregnancy are the following: first, physiological abdominal pain. Because after pregnancy, the development of the gestational sac will stimulate the uterus to appear pseudo-contraction phenomenon, appearing abdominal pain. Second, pregnancy with the gradual enlargement of the uterus, the ligaments around the uterus will become taut from relaxation, there is pulling pain. But this pain is relatively mild, is a vague vague pain, do not need to do special treatment, adjust the mood, appropriate rest, can be relieved by itself. Third, early pregnancy pain in the abdomen, consider whether there are gynecological diseases, including cervicitis, pelvic effusion, pelvic inflammatory disease, adnexitis, and uterine cysts and other diseases, to go to the hospital for a clear diagnosis and symptomatic treatment. Fourth, early pregnancy abdominal pain, if accompanied by vaginal bleeding phenomenon, consider the possibility of pre-eclampsia miscarriage or miscarriage, to go to the hospital for a clear diagnosis and symptomatic treatment.