Carrying 8 months of birth is not good, belongs to preterm labor. Preterm labor refers to the full 28 weeks of gestation to less than 37 weeks, preterm infants with immature functional development of organs, respiratory distress syndrome, necrotizing small bowel disease, arterial catheterization sustained opening and other diseases of increased morbidity, the smaller the gestational week of delivery, the lower the birth weight, the worse the prognosis of the fetus. Therefore, when preterm labor is detected, immediate preterm labor should be prevented by completing the promotion of fetal lung maturation and trying to prolong the gestational week to prevent preterm labor. When preterm labor is unavoidable, the survival rate of preterm infants should be improved as much as possible, and fetal cardiac monitoring should be strengthened during labor to recognize fetal distress and manage it as early as possible. In order to prevent the occurrence of preterm labor, we should do a good job of pre-pregnancy health care, check whether there are high-risk factors for preterm labor for those who plan to have a pregnancy, actively deal with the high-risk factors, and actively go to the hospital for consultation and treatment when discomfort occurs.