Abstract: Under the goal of carbon peaking and carbon neutrality,China’s energy system will speed up the transformation towards clean and low-carbon. Different from the high carbon emission of traditional fossil fuels,nuclear energy has advantages like low carbon emission,high energy density,resistance of extreme natural conditions and guarantee of safe and stable electricity,etc. It’s an essential part of China’s energy system transformation. By reviewing and summarizing the current situation of China’s energy system,this paper analyzes the developing opportunities of nuclear energy in the area of electricity generation,heating,desalination,hydrogen production,etc. It puts forwards problems need to be paid attention and suggestions on the high quality development of nuclear energy,and provides an idea for developing nuclear energy in a positive and orderly way”.