Aiming at the AC-DC hybrid power distribution network that has entered the in-depth test at present, this paper proposes an AC-DC power distribution network grid planning model to achieve the two-objective optimization planning of economic goals and operational reliability goals. Aiming at this optimization model, this paper uses the NSGA-II algorithm with elite strategy combined with the idea of co-evolution to optimize the solution. In the end, a case study was performed in a headquarters business district in Guangzhou, and the results demonstrated the feasibility and effectiveness of the method.