If the contractions are infrequent and there are no other symptoms, they may be pseudo contractions, and the pregnant woman should pay attention to rest and follow up for observation. If the attack is more frequent and accompanied by abdominal pain, it may be a precursor to labor or pathological manifestations, need to promptly seek medical attention. 1, pseudo contractions: pregnant women’s uterus is stimulated, such as emotional excitement, lifting heavy objects, etc., will cause contractions, these contractions are different from prenatal contractions, generally painless, irregular frequency, and there is no change in the cervical canal and the opening of the uterus, for pseudo contractions. Pregnant women should pay attention to rest, usually can be relieved by themselves; 2, true contractions: with regular and gradually increasing contractions, lasting 30 seconds or more, with an interval of 5-6 minutes, if accompanied by short contraction of the cervical canal, dilatation of the uterine orifice and the descent of the fetal previa, suggesting the imminent delivery, should be ready for delivery; 3, pathological manifestations: such as placental abruption can also appear persistent contractions, pregnant women appear obvious abdominal pain, lasting a long time If the contractions are not relieved, a cesarean section can be performed as soon as possible to avoid fetal asphyxia and serious blood loss of the pregnant woman.