目的 探讨晚发型佝偻病(晚佝)与锌、铜、铁钙的关系.方法 对39例晚佝和23例健康儿童进行血微量元素测定.结果 晚佝组低血锌、低血铁发生率显著高于健康组.晚佝组血清锌11.47±3.67μmol/L、血清铁14.04±5.72μmol/L,低于健康组,差异有非常显著意义(P<0.01).直线相关分析显示,血钙与锌、钙与铁、锌与铁间有相关性(r=0.349、0.332、0.316).结论 晚佝患儿存在着不同程度的缺锌、缺铁,且血钙、锌、铁之间里正相关关系. Objective To investigate the relationship between late-onset rickets and zinc, copper and iron-calcium.Methods Serum trace elements were determined in 39 cases of late and 23 cases of healthy children.Results The incidence of low blood zinc (P <0.01), and the level of serum calcium was 14.44 ± 5.72μmol / L in the late stage group, and the level of serum iron was 14.04 ± 5.72μmol / L in the late stage group, which was significantly lower than that in the healthy group (R = 0.349,0.332,0.316) .Conclusion There are different degrees of zinc deficiency and iron deficiency in children with nifedipine, and there is a positive correlation between zinc, calcium, iron, zinc and iron relationship.