Coitus has the effect of inducing labor, but it should not be done through coitus, because the safety of mother and baby cannot be fully guaranteed. The normal time for a woman to give birth is 37 weeks of gestation and less than 42 weeks of gestation, during which time the fetus is full term and the newborn is delivered vaginally. If you want to induce labor during this period, it is not recommended to use intercourse. In the last two months of pregnancy, it is not recommended that pregnant women have intercourse, nor is it recommended that pregnant women take a bath in a tub, because if they have sex or take a tub bath at this stage, it may cause intrauterine infection and premature rupture of the fetal membranes, resulting in puerperal infection after delivery. A puerperal infection is a serious maternal emergency and may even endanger the life of the pregnant woman. Therefore, it is not possible to have intercourse at the end of pregnancy, and it is even more unscientific to use intercourse to induce labor. The clinical method to induce labor is relatively safe and controlled by using oxytocin, vaginal misoprostol and other prostaglandin drugs.