In principle, 7 months of pregnancy is no longer suitable for induction of labor, unless there are absolute indications, pregnant women are generally not recommended to be induced at this time. The possible hazards of induced labor in the 7th month of pregnancy mainly include: 1. failure of induction of labor, the fetus is relatively stable in the uterine cavity at this time, and there is a possibility that the injection of induction of labor drugs does not effectively initiate uterine contractions, thus leading to failure of induction of labor; 2. postpartum hemorrhage, due to the large fetal body and immature cervical canal, the process of induction of labor may lead to serious bleeding caused by cervical canal laceration; 3. postpartum Infection, after the induction of labor, if the maternal personal hygiene habits or other reasons resulting in low immune function, easy to cause endometritis, pelvic inflammatory disease and other serious infectious diseases; 4, amniotic fluid embolism, in 7 months of pregnancy and later, after the induction of labor is also easy to lead to amniotic fluid embolism and endanger the life of pregnant women.