Abstract: This study selected 400 enterprises from Shandong Jiangsu, Fujian, Shanxi, Sichuan Provinces’ Economic Development Zones as the research objects, and discusses the influence of enterprise innovation openness on enterprise open innovation performance, then using the mediating effect model with an adjustment variable examined the mechanism of the absorbing capacity and innovation appropriability . The result shows that, the breadth and depth of opening has a positive influence on the absorbing capacity and the innovation performance; the absorbing capacity plays the intermediary role in the innovation and opening degree and open innovation performance; innovation appropriability has a positive regulation effect between the absorbing capacity and open innovation performance.

Key words:  open innovation, breadth of opening, depth of opening, absorption ability, innovation appropriability, innovation performance of enterprise