Combining with the choice of technology plan of coal pulverizing system and lignite drying system in pithead power plant, an analysis is carried out in this paper on the advantages and disadvantages of coal pulverizing systems with fan pulverizer and with mid-speed pulverizer plus lignite drying system, based on which the mid-speed pulverizer plus lignite drying system is eventually selected as the process route of coal pulverizing system. And then the major lignite drying technologies of both China and abroad are introduced. On the basis of a comprehensive comparison, the steam tube rotary dryer is selected as the main equipment of lignite drying system. Finally the lignite drying system is elaborated. It is concluded that it is very important to introduce the lignite drying technology into power industry for exploring the lignite drying process technologies that are suitable for China’s power industry.