The invention provides a cleaning device for an isolated switch contact. The cleaning device comprises an insulated operating rod, a connecting member, an adjusting bolt, a rotary plate, a magic patch and a base plate, among which the upper end portion of the insulating operation rod is fixedly connected with one end of the connecting member, the other end of the connecting member is connected to the rotating plate through the adjusting bolt, the rotary plate is fixedly connected with the bottom plate, the magic paste is wrapped around the surface of the bottom plate; and when used, the adjusting bolt is loosened, the rotating plate is driven to rotate the bottom plate to adjust the bolt, and the adjusting bolt is tightened.