Usually, 24 hours after the injection of Levanox, fetal movement stops and contractions appear. The contractions, vaginal bleeding or vaginal discharge should be observed during this period. Initially, the contractions are irregular with an interval of about 30 minutes, the interval is gradually shortened and the contractions become regular with an interval of 3-5 minutes, while the uterine opening is dilated, at which time appropriate activities can be carried out to facilitate the opening of the uterine opening and expulsion of the fetus. Levanox is generally referred to as Ethacridine Lactate Injection, which is suitable for induction of labor in mid-term pregnancy and can also be used externally for sterilization. The main effect of Levanox to induce labor is not to kill the embryo, but to induce sterile inflammation by this drug, which induces contractions and thus expels the embryo from the body. Retained placenta and membranes may occur after induction of labor with Levanox, requiring a clearance procedure. The contractions induced by Levanox are relatively smooth and will hardly cause excessive contractions during induction of labor, resulting in a low risk of uterine rupture, which is a common method of induction of labor in clinical work. Levanox is not suitable for those with scars on the uterine wall, uterine malformation or uterine dysplasia. After induction of labor, pregnant women should pay attention to rest, do not have intercourse for 1 month, do not engage in heavy physical labor, keep the vulva dry and clean to prevent infection. If there is abdominal pain and other discomfort, consult a doctor in time, and review the ultrasound and HCG regularly to ensure that the uterus returns to normal form.