Abstract: Abstract: as the mainstream of technology innovation in the new century , developing disruptive technology is an important means to occupy the commanding heights of international competition. The governments of all countries generally provide policy support. This paper proposes eleven policy tools based on the internal process of strategic niche management (SNM) and combines the three stages of SNM niche transition to build a two-dimensional analysis model for the policy protection space of disruptive technology, which provides a new perspective for policy analysis. The aim is to better guide the use and optimization of policy tools to promote disruptive technology to successfully across the “valley of death” between research & development and market and achieve the ultimate “disruption”. Finally, the effective of the model is verified with the study on the construction and evolution of the policy protection space and the application of policy tools in new energy vehicle industry.