The fetal viability rate at 33 weeks of pregnancy is generally very good, usually reaching more than 80%. After 37 weeks of pregnancy, the fetus is at full term, and all systems of the fetus are mature. If the fetus is delivered at 33 weeks of gestation due to some problem, the newborn baby is considered premature. At this time, most of the fetal organs are basically mature, such as the brain, heart and digestive system and other organs, but the lungs are relatively late in maturing. 33-week pregnant newborns may have immature lungs, and the chance of neonatal respiratory distress syndrome increases after birth, requiring care and observation in the neonatal intensive care unit. assisted breathing, and the use of lung surface active substances to promote lung maturation. Overall, newborns at 33 weeks of gestation are reasonably viable and can survive with care after birth. However, compared with full-term infants, they have deviations in physical fitness and may have more long-term complications, which may lead to pulmonary hyaline membrane disease or complications such as neonatal necrotizing enterocolitis and neonatal ischemic-hypoxic encephalopathy. With the improvement of people’s living standards and medical care, the survival rate of preterm infants is higher, especially those who are already 33 weeks pregnant, and all organs are basically fully developed. However, pregnant women are advised to avoid the risk of preterm birth, because the longer the fetus is in the mother’s womb, the more developed the organs are, and when it comes into contact with the outside world after birth, the chances of the disease will decrease and the chances of survival will be higher.