Using 454 A-stock listed companies in SSE as samples,this thesis validates EVA through next methods: firstly,using principal component analysis model deal with traditional performance indexes to obtain principal component & integrated index;secondly,calculating the Speama correlation coefficient between principal component index and EVA index;thirdly,constructing quantitative analysis model between principal component index and EVA index.The result indicates that the comparative compositor among EVA,EPE,EPA and traditional performance indexes and its principal component index is prominent correlation;and can be constructed Stat.Model by using them as cause and effect one another.These indicate that it holds consistency to evaluate performance by traditional performance indexes and by EVA,especially EPE & EPA index,EVA is scientific and effective indexes.