Abstract: Taking an IGCC power station in China as the research object, based on its operation behavior and control requirements, the design of the coordinated control system and its composition , the load command , as well as the control strategy of the gasification furnace and gas turbine are presented in this paper. The load control scheme with the gasifier control as the primer and gas turbine / turbine as the follower is proposed. The field operation shows the simplicity and effectiveness of the scheme. The IGCC unit control requirements can be fully satisfied.