Abstract: According to the condition of low-tech lock in China's photovoltaic industry,the interaction between multi-agent is analyzed based on technological breakthroughs mode relating several participants.On this basis,a three parties evolutionary game model is constructed involving the local government,photovoltaic industry companies and science research institution.By solving the model,the route and convergence trends of evolutionary stable strategy are analyzed.Main conclusions are as follows:first,the rewards from superior government,external revenue and research funds are helpless to promote tripartite cooperation;Second,the influence of photovoltaic enterprises supportive subsidies to tripartite cooperation formed the"inverted U",there is a"the inflection point of subsidies".Third,supportive investment of the research institutions is helpless to improve the cooperative willingness of research institutions,but the increase of associated earning and research institutions'innovation investment can improve teh research institutions cooperation intention significantly.Combined with the research conclusion,we put forward some policy suggestions such as establish the hierarchical subsidy mechanism of photovoltaic industry,cultivate the typical enterprises and technical innovation benchmarking enterprises,and optimize the cooperation mode among government,enterprises and research institutes.