To study the effects of vitamin A fortified oat drinks on children's serum retinol level.Methods6-8 year-aged students from primary school were divided into two groups. All the sdudents had normal diets for one year and the intervention group drank 250 ml drinks everyday. Dietary vitamin A levels were calculated by 3-day 24 hour dietary recall method, and the serum retinol levels were also detected. ResultsStatistically significant differences of diatey vitamin A in intervention group of boys and girls were observed after intervention (P<0.05), butdiatey vitamin A in all groups were lower than the national standard before and after intervention.The dietary intakes of vitamin A in intervention groups were higher than those of control groupsafter intervention.No statistic were observed in serum retinol levels before intervention (P>0.05), while there were significant difference were observed after intervention (P<0.05).ConclusionVitamin A nutritional status of children from Beijing suburb district was insufficient, and vitamin A fortified oat drinks could improve retinol levels of the children.