Abstract: Objective：To explore the effect of far infrared radiation heat preservation and infant incubator to keep warm on the vital signs and body quality of premature infants.Methods：Eighty premature infants were chosen who were hospitalized in Shiyan People's Hospital of Baoan District from Jan. 2013 to May 2014，and they were randomly divided into two groups:the observation group(40 cases) and the control group(40 cases).Compare the breath，heart rate，milk volume and body quality at different time point of hospital stay(on admission，4 d，7 d and 14 d) between the two groups.Results：There was no statistical difference in breath and heart rate at different time points(P＞0.05).There was no statistical difference in milk volume and body quality on admission between the two groups(P＞0.05).After being kept warm by different methods，the milk volume and body quality in the observation group were significantly higher than the control group on 4 d，7 d and 14 d of admission，and there was statistical difference(P＜0.05).Conclusion：Compared with far infrared radiation heat preservation，infant incubator is more fit for keeping warm for the premature infants，which can effectively increase the breath and heart rate and has significant clinical effect.

Key words: Premature, Far infrared radiation heat preservation, Infant incubator, Vital signs, Body quality, Infant, premature