Abstract: ：Global technology competition has changed from single technology competition to common technology competition, from enterprise core technology competition to industry generic technology competition; "platform" and "innovation and reproduction" as the core characteristics of common technology, put forward special requirements for the spillover and diffusion of generic technology. In this paper, 373 strategic emerging enterprises are taken as research samples to investigate the impact of the characteristics of patent cooperation network on the spillover of generic technology. The results show that: the relationship between the scale of patent cooperation network and the spillover of generic technology is inverted U-shaped; network relative centrality has a significant positive effect on generic technology spillover, and technology proprietary has a negatively moderating effect on the relationship between scale of patent cooperation network and the generic technology spillover, and the relationship between network relative centrality spillover. The research of this paper promotes the understanding of the relationship between patent cooperation network and generic technology spillover performance, and also provides enlightenment and suggestions for enterprises to build appropriate patent cooperation network and technology proprietary, so as to promote generic technology research and development and spillover.