Abstract:“We will speed up the planning and development of a system for new energy sources” is a new formulation and new judgment of the 20th National Congress of the Communist Party of China, which points out a new development direction for China's energy industry and has important strategic significance. Standing at a new starting point, how to accurately understand the core essence of the new energy system, what key construction tasks the new energy system contains, what key points standing at a new starting point, following issues, i.e., how to accurately understand the core essence of the new energy system, what key construction tasks the new energy system contains, what key points should seek breakthroughs, and what important relationships need to be revealed and taken into account, are sorted out and analyzed based on the current background situation in China's energy field, and countermeasures and suggestions are put forward, so as to provide decision-making reference for China to accelerate the planning and construction of a new energy system.