【Objective】 To analysis the birth information and feeding behaviors of infants under 36 months in Zhen'an county, Shaanxi province. 【Methods】 By PPS sampling method, total 432 infants under 36 months in Zhen'an were chosen and investigated using questionnaires. 【Results】 The average weight of newborn infants reached 3 270 g and the length was 50.3 cm with no significant difference between genders. The proportion of low birth weight and macrosomia was 5.1% and 5.6%, respectively. The proportion of breast-feeding with 4 months was 52.3%. The proportion of weaning in infants aged 4~5 m, 6~11 m and 12~17 m was 4.2%, 26.3% and 73%, respectively. In the infants with complementary foods added, the median of the first time soft grain adding was the 6th month. About half infants started their complementary eggs and meats during their 7th or 8th months. Half of the 18~35m children started eating fish in their 12 months. There were 88.4% and 56.5% of the infants aged 12~17 month have been fed meats and fish, respectively. 【Conclusions】 There is a pretty low proportion of breast feeding and a early weaning in infants under 36 months in Zhen'an, Shaanxi province. Complementary food is not in rich variety and the time adding foods with rich high-quality protein is late. It is necessary to make more efforts to improve breast-feeding and suitable complementary food in underprivileged rural areas including Zhenan county.