With the increasing penetration of renewable energy, the diversification of user load types, and the advancement of power electronics technology, traditional AC distribution networks are gradually evolving into hybrid AC/DC distribution networks. To achieve power flow calculation for complex hybrid networks with multiple converters, solve the problem of power flow calculation not converging due to the improper selection of initial values, a unified power flow calculation method for hybrid AC/DC distribution networks considering incomplete LU decomposition preconditioning is proposed.First, the voltage and power equations for both the AC and DC sides of the VSC are established. Next, establish power balance equations considering the types of nodes,the active and reactive power control equations of VSC.Subsequently, precondition the Jacobi matrix using incomplete LU decomposition,then solve the AC-DC hybrid distribution network power flow using the preconditioned BICGSTAB method.Finally,.the effectiveness of preconditioning is verified by comparing the non-zero element fill-ins of different preconditioning methods and the number of iterations required for convergence before and after preconditioning. Additionally, the robustness of the algorithm is verified by comparing the convergence behavior of different algorithms