Abstract: At present,a variety of traditional energy is being used in China,such as coal,oil,natural gas,and coal is one of the main energy in China.However,the extensive use of coal causes increasingly serious environmental problems.In this paper,we analyze the economic and environmental benefits of clean coal technology with system dynamics theory by introducing new factors,such as “the pollution gas governance input”,“the supply reduction benefits”,“the power supply coal saving benefit”.We establish the benefits of clean coal technology with USC technology and IGCC technology as the representative of the estimation model,respectively by calculating the ordinary thermal power technology and two kinds of clean coal technology.According to the analyses,we find that USC technology and IGCC technology have significant environmental and social benefits.At the same time,we find that the use of USC technology and IGCC technology can reduce pollution of gas investment and the government’s spending on environmental governance,from a long-term point of view with considerable economic benefits.