Abstract: Objective To understand the contents of Ca,Fe,Zn and Cu in hair of primary and secondary students in Jingyu county  and Dongliao of
Jilin Province and to provide basis for guiding reasonable diet and preventing the occurrence of mineral deficiency.
Methods Stratified cluster sampling method was used  to extract   675 primary and secondary school students and the
 Ca,Fe,Zn and Cu contents in the hair were detected  by ICP-MS method;the contents and deficiency rates of the four kinds of minerals in the hair of 6
75  primary and secondary school students with different genders and different ages were compared;and the relationships between Ca,Fe,Zn,Cu,and the correlations of the four kinds of minerals  with the  morphological indexes were analyzed.Epidata 3.0 was used to establish the database,and SPSS 13.0 statistical software was used for   statistical analysis.Results The Ca deficiency rate of 675 primary and secondary students was the highest (32.9%,222
/675),followed by Fe (22.4%,151/675),Zn (16.6%,112/675) and Cu (0.6%,4/675).The  distribution of Ca,Fe and Zn contents in the hair of the students with different genders had significant differences (P<0.05),and the girls’, were higher than the boys’,but  the distribution of Cu contents   had no significant difference (P>0.05);the distribution of Ca,Fe,Zn contents  between different ages groups had significant differences (P<0.05),and the deficiency  rates of Ca and Zn in 8 to 10 age group were the highest;but the distribution  of content Cu  had  no statistically significant difference (P> 0.05).The age had positive correlation with   Ca,Fe,Zn and Cu contents(rs = 0.129,rs = 0.075,rs =0.204,rs = 0.087,all P<0.05);and  the Fe content had positive correlations with Zn and Cu contents(rs = 0.576,rs = 0.149,all P<0.05);and the Ca  and Zn contents had positive correlations with the height,weight,chest circumference and sitting height of the students(P<0.05).Conclusion The deficiency rates of Ca and Fe in 675 primary and secondary students are higher;the contents of Ca,Fe
,Zn,and Cu  are important factors that affect the growth and development of children,so  reasonable diet and appropriate supplement of Ca and Fe sh
ould be performed.
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Key words: primary and secondary school students, calcium, iron, zinc, copper, correlation analysis