Abstract: Access of plentiful energy routers with power as the core to the distribution network is the future development direction of user-side energy supply. Aiming at the complex structure of energy routers and the inconsistency with the planning goals of distribution network, we propose an integrated planning method for energy routers and distribution network based on multi-agent system coordination mechanism. Firstly, an agent model for energy routers is developed, and the lowest annual cost is taken as an objective function to optimize equipment capacity and planning energy routers. Then, an agent model for distribution network is built, and an improved prim algorithm, combining a control strategy for over-limit voltage and control strategy for over-limit power, is adopted to perform the planning distribution network. Finally, the co-ordination mechanism of multi-agent system is adopted to complete comprehensive planning for energy routers and distribution network. The results verify the effectiveness of the proposed method, the method can be adopted to reduce system planning costs, absorb renewable energy, reduce the peak-valley difference of the tie line, and improve line utilization academic.