Objective To investigate the impact of different feeding types on infants'height and weight , and to compare the incidence of overweight and obesity among infants with different feeding types .Methods From June 2011 to December 2012, the healthy infants who did regular medical check-ups in the First Affiliated Hospital were selected and were divided into breastfeeding group , mixed feeding group and artificial feeding group according to feeding types within six months after birth .The height, weight and the incidence of overweight and obesity were compared among three groups when they were 3 months, 6 months and 1 year old.Results There were 103, 152 and 34 cases in breastfeeding group , mixed feeding group and artificial feeding group , respectively .Among boys , the average height and weight at 3rd and 6th month were not significantly different in different groups .At 12th month, the height of breastfeeding group was significantly lower than that of artificial feeding group (t=3.22, P<0.05), and the weight was significantly lower than that of mixed feeding group (t=1.97, P<0.05) and artificial feeding group (t=3.01, P<0.05).Among girls, there were no significant differences in the average height and weight at 3rd and 6th month among different groups .But at 12th month, the weight of breastfeeding group was significantly lower than that of artificial feeding group (t=1.96,P<0.05).The incidence of overweight at 3 months old was highest in mixed feeding group , while that was highest both at 6 and 12 months old in artificial feeding group .And the incidence of overweight was significantly higher in artificial feeding group than that in breastfeeding group at 12 months old(χ2 =4.29, P<0.05).The overall incidence of obesity at 3, 6 and 12 months old was highest in artificial feeding group , and it was obviously higher in artificial feeding group than in breastfeeding group (χ2 =3.88, P<0.05).Conclusion Both the incidence of overweight and that of obesity are higher in artificial feeding group than those in breastfeeding group , and breastfeeding may have potential benefit in preventing infant overweight and obesity .%目的探讨不同喂养方式对婴儿期身高、体重发育的影响，比较不同喂养方式婴儿超重和肥胖的发生率。方法选择2011年6月至2012年12月在我院儿保门诊定期体检的0～1岁健康婴儿为研究对象，以生后6个月内的喂养方式分为纯母乳喂养组、混合喂养组和人工喂养组。比较3组婴儿3月龄、6月龄和1周岁时身高、体重发育情况和超重、肥胖的发生率。结果纯母乳喂养组、混合喂养组和人工喂养组儿童分别为103、152和34例。男婴在3、6月龄时，不同喂养组儿童的身长和体重均值无统计学差别，在12月龄时母乳喂养组儿童身长明显低于人工喂养组（t＝3．22，P＜0．05），体重明显低于混合喂养组（t＝1．97，P＜0．05）和人工喂养组（t＝3．01，P＜0．05）。女婴在3、6月龄时，不同喂养组儿童的身长和体重均值无统计学差别，在12月龄时母乳喂养组女婴体重明显低于人工喂养组（t＝1．96，P＜0．05）。在3月龄时超重的发生率以混合喂养组最高，6、12月龄时均以人工喂养组发生率最高，且在12月龄时人工喂养组明显高于母乳喂养组（χ2＝4．29，P＜0．05）。肥胖的总体发生率在3、6、12月龄均以人工喂养组最高，且在6月龄时人工喂养组明显高于母乳喂养组（χ2＝3．88，P＜0．05）。结论人工喂养的婴儿超重和肥胖发生率均高于母乳喂养儿，母乳喂养对预防超重和肥胖的发生有一定作用。
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