Objective To investigate and evaluate the vitamin D levels among children aged 0-6 years in Songzi

and to provide a reference for the development of measures to prevent vitamin D deficiency in children in the area.Methods A total of 189 children aged 0-6 years who were born or underwent a physical examination in a hospital in Hubei province between 2016 and 2017 were selected as research subjects.The serum 25-hydroxyvitamin D levels were measured

and a semi-quantitative food frequency questionnaire was used to study the dietary conditions within 30 days.Results The serum 25-hydroxyvitamin D level of the study subjects was（16.13±7.69）ng/mL.Among them

25 cases（13.22%）were severely deficient in 25-hydroxyvitamin D

60 cases（31.75%）were deficient

45 cases（23.81%）were inadequate and 59 cases（31.22%）were normal.The proportion of subjects aged<1 who were severely deficient in 25-hydroxyvitamin D was 13.64%

while that of subjects aged 1-<2 and 2-6 years were 14.00% and 10.34%

respectively.The supplementation rate of vitamin D among subjects aged<1 was 90.91%

which was higher than 68.00% among subjects aged 1-<2 and 41.38%among subjects aged 2-6（P<0.05）.In addition

the proportions of subjects aged<1

1-<2 and 2-6 whose vitamin D intake was≤40%of children′s recommended vitamin D intake were 6.36%

10.00%and 13.79%

respectively.Conclusion Vitamin D levels are low in children aged 0-6 in Songzi city

and vitamin D deficiency is common.Dietary interventions are recommended for children with vitamin D deficiency in the area.Besides

health education on vitamin D and other nutrients should be strengthened in schools

and outdoor activities should be increased to reduce the vitamin D deficiency rate among children in the area.