In this paper, the charging and discharging characteristics of electric vehicles are considered in the wind-solar-battery integrated energy system. Combined with the “carbon peak” and “carbon neutralization” goal in China, a coordinated and optimal operation model of integrated energy system is established with the minimum carbon emission as the objective function. The model adjusts the load curve of the integrated energy system by using the charging and discharging characteristics of electric vehicles, and achieves the economic optimization and carbon emission standard of the system on the basis of peak load regulation and frequency regulation. In this paper, the improved tabu cell membrane optimization algorithm is used to solve the model. The example analysis shows that the optimization scheme can stabilize the system load fluctuation and achieve economic optimization and carbon emission control by shifting and replacing the conventional electric load and electric vehicle load.