Objective To study the feeding practices of different household registration infants aged 8 months in surveyed area using two methods,and to find the existing problems in order to provide evidence for feeding intervention. Method A cross-sectional study was conducted. Infants aged 8 months who accepted conventional community child health services in Beijing were selected in this study in 2014.Infants with premature birth,low birth weight and congenital birth defects and heart,liver,kidney,blood diseases were excluded. Questionnaire on infant feeding practices were surveyed and analyzed. Results Complementary feeding rates before 6 months in resident and migrant infants aged 8 months were 52.0% and 65.1% (P<0.05),the mean value of 8-month-old infant feeding index of resident and migrant population were 12.42±2.24 and 11.41±2.18 (P<0.001) respectively. The qualified rate of feeding index of the resident population was better than the migrants(P=0.001). In the sub-items of the feeding index,bottle feeding index score in the past 24 hours was lower in resident population(P<0.001). In terms of complementary feeding rates in the past week,the feeding index score of milk,fish-shrimp,poultry and meat,vegetables and fruits were higher in the resident population(P<0.01).Some indicators such as early initiation of breastfeeding,minimum dietary diversity and children ever breastfed of the resident population were better than that of the migrants(P<0.05). The minimum acceptable diet of all breastfed children was lower than non-breastfed children(P＜0.01). Conclusions The feeding practices of 8-month-old infants of resident population is better than that of the migrants in the surveyed area,but the overall situation is not optimistic. Feeding index method and minimum dietary method both have their own merits.