Since the reform and opening up，China’s nuclear power industry has undergone the stages of starting from scratch，moderate development，positive development and safe and efficient development. From scratch，from small to large，China has become one of the world’s largest nuclear power countries. It has realized the technology leapfrogging from the second generation to the third generation，established a complete nuclear power industry chain，actively carried out international cooperation and exchanges，and has adequate conditions to move from a “big nuclear power country” to a “powerful nuclear power country”.