Commercial traits of 7 tomato cultivars were comprehensively evaluated using the method of weighting of principal component in the experiment.The comprehensive evaluation function was built up.The results showed that with the factor analyzed,2 principal components were abstracted and their cumulative rate of variance was 86.59%.The weights of the nourishment quality and the external appearance quality were higher,which was met up to the demand of the comprehensive evaluation.According to the scores of commercial traits,the cultivars varied considerably in the nourishment quality traits and the preservative quality traits,and less in the external appearance quality traits.This was helpful to pick out good one.The cultivars were divided into three classes,of which ’YH02-6’ and ’YH02-9’ were in the first class,’YH02-1’ and ’YH02-7’ were in the second class,and ’YH02-11’,’YH02-8’ and’YH02-5’ were in the lowest class.This approved that this analysis method was a practical and efficient way to analyze the commercial traits of the fruits of tomato comprehensively.It integrated the methods of AHP and the principal component analysis to make the evaluating job easy,objective,and obvious.