Objective: Understanding the length of neonates and the height of parents, to know the relationship about it in Xilinhot area. Method: According to 342 cases of pregnant women in Xilingol hospital in September to December, 2013 as the research object. In the meantime, investigate the postpartum, their spouse and newborns to carry out folow-up survey, through questionnaires, Result: the average length of newborns (50.41 2.28) cm. Conclusion: Newborns length was positively correlated with maternal height in normal gestational age, and the length of newborns premature birth and post term pregnancy was no relevance with mothers.