Improving energy efficiency is an important measure to achieve sustainable energy development. Based on the concept of energy hub, a generalized modeling method for micro energy grid is proposed and the linear power balance equation is obtained. Further, aiming at maximum revenue and maximum energy efficiency, the multi-objective optimal dispatch model for micro energy grid is established, where the Pareto frontier is obtained by Matlab and GAMS software combined with weighted sum method. And the fuzzy membership function is adopted to obtain the optimal compromise solution, which is used as a multi-objective optimal dispatch scheme. Finally, a typical micro energy grid is constructed for simulation, where the results suggest that the proposed generalized modeling method is intuitive and versatile and the proposed multi-objective optimal dispatch model can provide multi-dimensional dispatch schemes for decision makers, taking into account both the system operational economy and efficiency. ? This work is supported by National Natural Science Foundation of China (No. 51777077) and Planning Program of Guangzhou Power Supply Bureau (No. 030100QQ00170002).