The development of integrated energy system is the only way to realize the energy Internet. The coordinated operation of integrated energy in the region is the key to realize the complementary of electricity, heat and gas. Firstly, the control and operation characteristics of wind turbine, gas turbine and energy storage device are analyzed. Taking the minimum operation cost as the optimization objective and considering the constraints of safety and stability, the comprehensive energy scheduling model of electricity heat gas area is established. Then, the proposed model contains avariety of complex operation constraints of electricity, heat and gas,while the variables are coupled with each other. It means that traditional mathematical optimization methods is difficult to solve this model. Therefore, particle swarm optimization algorithm is used. Finally, the simulation results show that the proposed model and algorithm are correct and effective.