Abstract：Based on domestic and foreign literatures, this paper tried to build environmental innovation performance evaluation index system from the perspective of input and output, and conducted evaluation on regional environmental innovation input and output level. This paper measured each region’s input-output performance in environmental innovation using the relevant data of the "China Statistical Yearbook" and "China Environment Yearbook,", and analyzed the main factors that had effect on environmental innovation performance.There was a big difference between each region’s environmental innovation performance, and Beijing and other five provinces (municipalities) were in the phase of constant returns to scale in environmental innovation, but other provinces (municipalities) were in the phase of increasing returns to scale, which meant the added input would improve the environmental innovation output and performance levels in these areas; various input factors did not have significant effect on the promotion of environmental performance level, but capital input factor and environmental regulation input factor had positive effect on economic performance level.
