The invention relates to an operating method for live line replacement of a disconnector by means of an insulating rod method, and the operating method is widely applied to work for replacing a disconnector in an overhead power distribution line by means of a ground potential method, and belongs to the technical field of the distribution line live line repair site. The operating method comprises following steps: hanging a lead wire shielding hanging board on an edge phase wire and an insulator ball head by means of an insulation operating rod to complete insulating shielding of the edge phaselead wire, and hanging an integrated shielding cover by means of the insulation operating rod to complete insulating shielding of an edge phase tension insulator, a wire clamp and a part of wires; disconnecting lead wires at two sides of a middle phase disconnector, the middle phase disconnector being in a power-off state at the moment, replacing a new disconnector by an operator; and connecting lead wires at two sides of the disconnector to a main wire by means of the insulation operating rod. According to the invention, power outage is not needed during the operation process, a whole set insulating shielding protection appliance is employed to carry out insulating shielding and isolation on an electrified body and a grounding body, the fact that the operator keeps an enough safe distanceaway from an electrified device is guaranteed, and the safety coefficient is high.