Abstract: A multi-objective optimal dispatch method for an integrated energy system（IES）,concerning energy efficiency,economy and environment,is proposed,and its corresponding solution method is proposed,which can bring up an energysaving,economic and environmental-friendly dispatch plan for the IES.Firstly,the model of multi-objective function for the IES,which takes exergy efficiency into consideration,is established to meet the demand of an economic,efficient and environmental-friendly IES.Secondly,a convex IES mathematical model for the multi-objective dispatch method is established with convex relaxation method to preserve the convexity.Thirdly,the solution method for the multi-objective optimization model is studied.The scalarization method is used to find the Pareto front（PF）of the convex model and a selection method is brought up to choose the multi-objective optimal dispatch plan from the PF.Numerical results based on a case from Guizhou Province in China validate the applicability of the proposed multi-objective dispatch method in efficiently bringing up a dispatch plan for the IES and making the IES operating with a better overall performance.