The capacity of wind power installed in China is developing rapidly, but the situation of insufficient sending capacity is insufficient. In this situation, research on wind power project consumptive ability is espacially necessary. Above all, the first level evaluation index of four aspects was built, including basic characteristics. Then improved it to a comprehensive evaluation index system, which contains 15 secondary indicators including the stability of wind power output. Finally, used data envelopment analysis to evaluate five wind power projects. The results show that the DEA method can be well applied to the research of wind power consumptive ability.