Premature rupture of the amniotic fluid is related to many causes, which need to be judged according to the physical symptoms of the pregnant woman: First, if the pregnant woman has a loose cervical opening it may lead to stimulation of the fetal membranes, triggering premature rupture of the amniotic fluid. Second, fetal membrane dysplasia may also lead to premature rupture of amniotic fluid and other problems, such as the presence of amnionitis, chorioamnionitis and other problems can lead to amniotic cavity dysplasia, thus triggering premature rupture of amniotic fluid. Thirdly, fetal malposition, cephalopelvic disproportion and excessive amniotic fluid will increase the pressure of the amniotic membrane, resulting in premature rupture of the amniotic fluid. Fourth, too much force during sex during pregnancy may also result in the rupture of amniotic fluid. Fifth, other factors may also lead to this situation, such as a violent cough, sudden laughter or heavy physical activity during pregnancy may lead to premature rupture of the amniotic fluid, so usually must do a good job related to conditioning work.