The invention provides an urban power grid analysis method, device and implementation device. The method comprises the steps of acquiring a power grid structure model of a current urban area; identifying an equipment node in a power grid structure model, and determining whether abnormal power supply exists not or according to a wiring relation of the equipment node; identifying a circuit structurein the power grid structure model, and determining whether abnormal wiring exists in the circuit structure according to a preset model structure, wherein the preset model comprises characteristic values of a common-tower three-loop circuit and a common-tower dual-loop circuit; determining running states corresponding to the equipment mode and the circuit structure according to historical runningdata of a power grid in the current urban area within set time frame, wherein the running states comprise load rate and N-1 verification; and adjusting the equipment node with abnormal power supply and the circuit structure with abnormal wiring according to a power supply load and the running state of the current urban area. By the method, the urban power grid analysis is more reasonable, and thepower supply capability of the power grid is improved.