By applying the principal component analysis and cluster analysis method,combining with the statistic software SPSS,the comprehensive evaluation of quantitative and qualitative of trace elements in Nitraria leaf from Qinghai region were studied and a new area in comprehensive evaluation scientifically was explored. By applying the principal component analysis and cluster analysis method, combining with the statistic software SPSS, the comprehensive evaluation of quantitative and qualitative of trace elements in Nitraria leaf from Qinghai region were studied and a new area in comprehensive evaluation scientifically was explored.