Abstract: Objective To investigate hospital delivery rate and its influencing factors among migrant pregnant women and to provide evidences for making policy to increase hospital delivery rate in migrant pregnant women.Methods The data of the study were collected from dynamic monitoring survey on migrant population all over China in 2012.Totally 22 774 migrant pregnant women and their 36 105 children under eighteen years of age were included in the study.Results Of all the children surveyed,32 997 were born in hospitals and the hospital delivery rate was 91.40%;2 944(8.15%)were born at home and 164 were born in other places(0.45%).The results of univariate and multivariate logistic regression analyses demonstrated that the hospital delivery rate was lower in minority migrant pregnant women than that in the Han migrant pregnant women.The hospital delivery rate was improved with the increment of maternal education and family income and decreased with the order of the newborn.The hospital delivery rates were lower in the migrant pregnant women with the pregnancy not conforming to family planning policy,having the delivery at the place of domicile,and migration across various provinces.Conclusion The main factors influencing the hospital delivery rate among migrant pregnant women were nationality,educational level,family income,whether with the pregnancy not conforming to family planning policy,birth order of the newborn,delivery place,and migration scope.