Contractions usually occur in the middle or late stages of pregnancy, and the location of the abdominal pain is usually in the lower abdomen. Contractions are caused by the increased sensitivity of the uterus due to the increasing size of the fetus, external influences, and the imminent delivery of the baby, and generally occur in the middle or late pregnancy, when the pregnant woman will feel tightness in the lower abdomen, stomach pain, hardness of the abdomen and other symptoms, and generally do not feel the pain in the upper abdomen. If the contractions are short and can be relieved after rest, they are pseudocontractions. An important sign of labor is regular and gradually increasing uterine contractions that last 30 seconds or more, with an interval of 5-6 minutes, accompanied by progressive disappearance of the cervical canal, dilatation of the uterine opening, and the descent of the fetal preluteal section. Pregnant women should pay attention to the prenatal examination during pregnancy, actively listen to the advice of professional doctors to do a comprehensive nursing care, pay attention to rest during pregnancy, and at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.