China is standing in a key period of accelerating transformation of its economic growth model. As the demand of energy is continuously growing, the pressure of environmental protection and climate change increasingly restrain China's sustainable economic and social development. The characteristics of the primary energy mix determine the power supply pattern in China, which is dominant with coal fired power generation. Coal fired power generation is a big consumer of coal and water and also a big contributor to pollutants. The strategic adjustment of the electric power industry is to optimize coal fired power development and transit to intensive and environment friendly development mode. This paper demonstrates the strategy of clean coal power technology in China, reviews the R & D achievements and industrial commercialization of ultra super critical technology and large scale air cooling technology, and expounds the supporting role of these two advanced coal fired power generation technologies in transforming the electric power industry.