A fetus born at 37 weeks of gestation is not considered preterm and generally does not require special care in an incubator. Premature babies are those born at 28 weeks to less than 37 weeks of gestation, and those born at 37 to 42 weeks are called full-term babies. In general, preterm infants are underweight and have underdeveloped multiple organs, requiring care in an incubator. The duration of care in the incubator is related to the gestational age, weight, and body temperature of the newborn. Generally, it is necessary to correct the gestational age in the incubator to 36 weeks, the weight is higher than 2000g, the respiration and heart rate of the newborn is stable, and the body temperature can be maintained at normal level when the newborn can be removed from the incubator. The fetus with 37 weeks of gestational age, the development of various organ diseases mature, generally do not need to use the incubator. In addition, if the full-term newborn is underweight, vital signs are not stable, can also be put into the incubator care.