Pseudocontractions occur in late pregnancy as the uterine contractin receptors increase and the uterus becomes sensitive. Pregnant women are engaged in fewer motor activities at night, are in a relatively quiet state and pay more attention to themselves, so it is not that pseudocontractions all occur at night, but it is easier to detect pseudocontractions at night. And in the quiet state at night, pregnant women are also prone to touch their uterus, which causes stimulation to the uterus and easily causes uterine contractions. The contractions that appear irregularly during pregnancy and do not cause the cervix to shorten and the opening of the uterus to widen are all pseudo contractions. However, when the pseudo contractions become more and more frequent and stronger, they will become real contractions and need to go to the hospital for examination in time.