Fetuses born at 28 weeks of gestation are preterm and have a low survival rate, with no specific value, but are kept alive as long as conditions allow. Preterm infants are newborns delivered at 28 weeks of gestation but less than 37 weeks of gestation, and about two-thirds of infants who die within one year of age in China are preterm infants. In recent years, as the monitoring and treatment of preterm infants have been improved, the survival rate has increased significantly and the mortality rate has decreased. Preterm babies born at 28 weeks of gestation are not fully developed in all organs, and can only reach the level of barely sustaining life, which can easily lead to respiratory difficulties, jaundice, infections and other problems. The smaller the gestational week of birth and the lighter the weight of the newborn, the lower the survival rate. If a premature baby is born without adequate support from the environment, equipment, etc., the survival rate will be greatly reduced. Therefore, if the membranes of the fetus are intact, the fetus is kept alive until the 34th week of pregnancy if the condition of the mother allows. If the condition of the mother or the fetus does not allow the pregnancy to continue, termination of the pregnancy is recommended.