Abstract: The heat supply mode of thermal power plants generally adopts central heating, which uses the high thermal energy generated by the complete combustion of coal for power generation, and the low thermal energy for heating, so as to realize the efficient utilization of energy. This paper expounds the present situation and existing problems of central heating in thermal power plants. This paper analyzes the necessity and obstacles of central heating in Hunan thermal power plant and puts forward some measures to optimize central heating in Hunan thermal power plant.