The tightness and hardness of the stomach at forty weeks is frequent, which means that the pregnancy is full term, and it is also an important manifestation of contractions, which are an important feature of pre-labor. The contractions are irregular and weak at the beginning, and gradually become regular, stronger and stronger, with a gradually longer duration and shorter intervals, so the contractions are not regular and cyclical at the beginning, and no pain is felt. If the patient’s hospital is close, go to the hospital ten minutes before the contractions occur, if it is far away, it is recommended to stay in the hospital and be ready to welcome the baby.