Establishing a comprehensive carbon neutral policy system and creating a practical timeline, roadmap, construction plan, and path for achieving carbon neutrality is of utmost significance. Such a system is crucial for implementing the national carbon neutrality strategy, promote national sustainable development and build a community of human destiny. This chapter compares the national policy system related to China's carbon neutrality, analyzes the serious situation faced by China in the field of “dual carbon”, clarifies the overall goal, milestones, and sub-areas to achieve China's carbon neutrality, and specifies the timeline, roadmap, and construction plan, which is an important theoretical guidance for the implementation of the carbon neutrality strategy. It has an important theoretical guidance value and practical guidance significance for the implementation of the “dual carbon” strategy.