Objective ：To know about the children vitamin A (VA) level from 0 to 6 years old in Shenyang .
Methods：From February 2015 to February 2016,the children aged 0 to 6 were selected as the study subjects.The children were divided into 0 to1 age group,＞1 to 3 age group,＞3 to 6 age group,a total of 1 490,the use of high performance liquid chromatography to detect serum VitA levels.

Results：The mean serum VitA level was (1.10±0.26)μmol/L,the incidence of subclinical vitamin A deficiency was 4.0%,and the incidence of suspicious SVAD was 36.6%.The serum VitA level of 0 to 1-year-old children was significantly lower than that of ＞1 to 3-year-old children and ＞3 to 6-year-old children(P<0.05).There was no significant difference in serum VitA between ＞1 to 3-year-old and ＞3 to 6-year-old children(P>0.05).There was no significant difference in the incidence of SVAD and suspicious SVAD among all age groups(P>0.05).The incidence of SVAD in children with diarrhea and respiratory infection was higher than that in healthy children within one month(P<0.01).

Conclusion： The prevalence of SVAD and suspicious SVAD in preschool children in our city is still relatively high.It is necessary to raise the awareness of VitA in preschool children and to prevent and intervene the occurrence of vitamin A deficiency in children,especially infants and young children.Thereby fundamentally helping reduce the incidence of respiratory and digestive diseases.