Objective To discuss the influencing factors of admission hypothermia in very low birth weight infants (VLBWI),so as to provide references for clinical nursing during delivery.Methods 287 cases of VLBWI from January 2009 to April 2011 who were less than 32 weeks and transferred to NICU after birth were studied by retrospective analysis and divided into the hypothermia group (body temperature < 36 ℃) with 181 cases and the control group (body temperature ≥ 36 ℃) with 106 cases according to their admission body temperature.Clinical records of VLBWI and parturient,temperature of the delivery room at birth and admission time were observed and compared between two groups.Results The incidence rate of infants whose admission body temperature was lower than 36 ℃ was 63.07%.Mother's pre-delivery body temperature,antenatal glucocorticoid,delivery mode as well as birth weight,1 min and 5 min Apgar score,status of trachea cannula and time of entering ward of VLBWI and room temperature were significantly different between two groups (Z/x2 =6.29,10.65,8.87,5.85,20.42,12.99,18.22,14.11,9.04,respectively; P < 0.05).However,mother's age,gravidity,parity,multipara,the incidence of premature rupture of membrane as well as gestational age and gander of VLBWI were found no significantly different between two groups (P > 0.05).Multivariate logistic regression analysis showed that no prenatal hormone,cesarean section,low Apgar score on the 1st min,low temperature in the delivery room and long admission time were the main influencing factors of admission hypothermia in very low birth weight infants.Conclusions Admission hypothermia in very low birth weight infants was mainly associated with prenatal use of hormones,cesarean section,Apgar score on the 1 st min,temperature of the delivery room and admission time. Key words: Infant, very low birth weight; Admission hypothermia; Influencing factor