Objective To understand nutrition levels and change trends of zinc(Za), iron(Fe), magnesium(Mg), copper(Cu) in the whole blood of children aged 0~12 in Baotou. Method A total of 918 children aged from 0 to 12 years old for the healthy examination were randomly selected, and statistical analysed using SPSS 16.0 software packages. Results Lack rate of Zn and Fe in 4 age stages were higher.Along with the growth of the age, the content of zinc increased gradually.Iron level as a whole was on the rise, and rised more sharply after 6 years old.Cu and Mg lack of rate were low.Mg level was on the rise along with the age growth.Between 0~6 years old children's copper level change was not obvious and decreased obviously after 6 years old. Conclusions Lack sequence of children in Baotou is as follows:zinc, iron, copper, magnesium.Diagnostic criteria of 4 mineral elements of children should be divided according to age stage.