The duration of ventilator use is related to when the infant resumes spontaneous breathing, and the exact time varies from person to person. Premature infants are prone to respiratory distress, mainly due to the immaturity of various organs in preterm infants, especially due to insufficient secretion of alveolar surface active substances. If the child has symptoms of hypoxia such as weak cry, blue limbs, unresponsive or poor response, the score is basically 3-4 or even lower. At this time, ventilator-assisted ventilation is needed to correct the state of low oxygen saturation in the child’s body and actively cooperate with other therapeutic measures. The ventilator needs to be maintained until the infant can breathe completely on its own before it is removed, and should not be withdrawn prematurely or frequently, otherwise it will have adverse consequences for the child. In short, parents should not worry too much, but keep a good attitude and cooperate with the doctor’s treatment, most babies can be discharged successfully and grow up healthily.