Objective To analyze the growth status of preterm infants discharged from neonatal intensive care unit(NICU) at the age of 0-24 months,in order to provide evidence for growth monitoring and nutrition management of preterm infants. Methods The data of growth development of preterm infants discharged from NICU in Children's Hospital of Shanghai were retrospectively collected from January 2013 to December 2017. The body length and weight of preterm infants aged 0-24 months in different gender and age groups were analyzed. Results A total of 1 143 cases were included, and the extremely early and early term infants account for the largest proportion of premature group, which was 36.8%.Moderately preterm accounted for 29.6% and late preterm accounted for 33.6%.The average gestational age was(32.2±2.4) weeks, and there was no significant difference in the composition of birth age in gender(χ²=2.048,P=0.562).The average height and weight of preterm infants at adjusted age of 0 month exceeded that of the full-term infants.Preterm infants at adjusted age of 1 month achieved catch-up growth, but the height and body weight of preterm infants were still lower than those of full-term infants.Besides, the catch-up growth of preterm male infants was undesirable. Conclusions Appropriate catch-up growth is the goal of nutrition management for preterm infants after discharge,and the preterm male infants should be paid more attention to. Also,systematic nutrition management will facilitate appropriate catch-up growth.