Objective To explore the effect of complementary foods simulator applied to diet transition education for infants. Methods Three hundred term infants at 4-6 months of age were divided into a control group of 199 and an intervention group of 101 chro-nologically.The control group received routine education on diet transition at 6, 8 and 10 months of age, while the intervention group utilized self-designed complementary foods simulator for education. All of them were followed up at 12-month of age. Physical development indicators, hemoglobin and mineral substance in the blood plasma, as well as caregiver′s knowledge-attitude-practice （KAP） of infant diet transition were compared between the two groups. Results The blood hemoglobin concentration in the intervention group was significantly higher than the control group at the age of 12 months （P＜0.01）.Caregiver′s approval, execution and total KAP score were also significantly higher in the intervention group compared with the control group （P＜0.01 for all）. Conclusion Application of complementary foods simulator to diet transition education for infants can improve attitude and practice of caregivers, thus to provide rational complementary foods and boost healthy development of infants.