With the aggravation of competitions between enterprises in recent years, the innovation of the older generations by new ones is even faster especially in products and technologies. The main stream to in economic development is to do R&D in technology by cooperation, more and more enterprises cooperate with one another to make full use of their own strength, share the resource and advantages they have. It is a core phase for enterprises to establish a solid cooperation relation in R&D, in which the spillovers effect is the main factor of the urge of R&D between enterprises.Before I studied the influence of spillovers effect to the urge of enterprises' cooperation in R&D, I divide the decision phase of cooperation R&D into two, R&D cooperation and R&D competition, and find out the way to present the differences in the motivation of enterprises' cooperation in R&D, then analyzed the influence of asymmetric spillovers to the urge of enterprises' cooperation in R&D.Finally I found in the research that the asymmetric spillovers have a more remarkable influence to the motivation of enterprises' cooperation in R&D. When the parameters of all enterprises that join in the cooperation are greater that 0.5, they have the motivation to do cooperation work. The inflow and outflow of spillovers effects have different influence to the urge of R&D. First, in a solid cooperation, the outflow of spillovers effects would enhance the motivation to cooperate, and then the inflow of spillovers effects in the beginning phase could enhance the urge to cooperate with each other, the urge to cooperate raise with the increase of knowledge inflow until it reaches its first peak value, then decreases. At last, when the enterprises could share the knowledge entirely, the motivation to cooperate with each other reaches to the maximum value. In the analysis that followed we take some foreign enterprises as examples to investigate the influence of spillovers effects to the motivation of cooperation R&D, which in some aspects verified our conclusion in the paper. |