Abstract: As lignite occupies 13% of the reserves of coal resource in China,it is of great significance to develop the technology of lignite comprehensive utilization and create new methods to optimize the utilization.These technologies and methods will make great contribution to adjust the energy structure and optimize the energy industry.This paper makes a simple retrospect about traditional methods of utilizing lignite and introduces the ideas of process flow of power generation and pyrolysis and hot water drying of lignite.