The size of the sequelae of 29-week preterm infants mainly depends on the nursing condition after delivery. Nursing condition is good, the development of various tissues and organs is not affected, basically there will be no obvious sequelae; nursing condition is not good, causing hypoxia, infection, etc., there will be obvious sequelae. 1. Small sequelae: after the birth of preterm baby itself is relatively weak, need to enter the incubator in time for care, during the period of nutritional support and organ testing to determine the development of newborns, successfully through the dangerous period, the development of organs in good condition, there will be no obvious sequelae. 2. Sequelae: After the delivery of preterm babies, because of poor care, causing obvious tissue and organ hypoxia and body infection symptoms, will cause abnormal organ development, cerebral palsy, indigestion, lung function abnormalities and vision abnormalities and a series of sequelae. Preterm labor requires active care and treatment under the guidance of a doctor to avoid delaying the time window for care and causing unnecessary complications.