Abstract: Objective: To evaluate the effects of dietary nutrition health education on preschool children in Bengbu and provide the basis for establishing effective nutrition intervention model.Methods:Eight hundred and seventy-nine children(2 to 6 years old) were randomly selected,and divided into intervention group(496 cases) and control group(383 cases).The intervention group were educated for 1 year.Parents were surveyed by knowledge-attitude-practice questionnaire,physical examination of children in the intervention group were investigated before and after health education.Results:The growth status of children and nutrition knowledge levels of parents in intervention group after intervention were better than those in before intervention and control group (P0.01).The proportion of children who drunk milk and had breakfast everyday increased significantly,the proportion of children who had specific food preference or prefer fast-food decreased significantly,the differenes of which were statistical significance(P0.01).Conclusions:Nutritional education can improve parents nutritional knowledge and promote preschool children to change their dietary behaviors.