The invention discloses a modeling method of a unit system power distribution network control model. According to the method, a large model of a whole network is reasonably segmented, so that a locally utilized and globally integrated topology analysis model is achieved. The method comprises the steps of firstly obtaining the smallest analysis element and the smallest analysis unit of the unit system power distribution network control model in an in-station topology analysis manner; sequentially reading a switch model and building a bus linked list; and building a power load list, a power supply list and a backup power supply list through system network analysis, thereby finishing building of the unit system power distribution network control model. Through the modeling method, dynamic loading of a local model can be conveniently implemented by an automatic application and analysis program of a distribution network according to real-time fault information, resource consumption is reduced and the topology analysis efficiency is improved.