Abstract: Aiming at the lack of effective site optimization method of integrated energy system planning and failing to consider the load characteristics in energy supply area division process, an coordinated optimal method for energy station and pipe network planning considering complementary load characteristics was proposed. Firstly, based on the interaction effect of station and network planning, an alternated optimal method for station sitting, energy supply area division and pipe network layout was proposed. Then based on the energy supply radius of energy station, the method of determining the number of new energy stations was proposed. Secondly, based on the topological characteristics of cellular networks, the initial site determination method was presented. Thirdly, considering the load characteristics, the evaluation index and division method of the integrated energy stations energy supply area division were proposed. After that, aiming at the problem of pipe network layout on the road, a pipe network optimization method based on Kruskal algorithm is proposed. Combined with the linear optimization model, the load and road pipe network access direction were optimized. Then, the calculation method of load "equivalent energy distance" and the site optimization method based on "equivalent energy distance" were proposed. Finally, the efficiency and practicability of the method are demonstrated on a practical system.