The utility model provides an adjustable action bars of protection against electric shock, the action bars has cup jointed the second action bars by first action bars to pass through action bars extension connecting piece and connect with action bars extension mounting and fix to be provided with action bars operating head installation buckle in the end of first action bars or second action bars, the operating head of erection joint different grade type, and cup jointed action bars insulating sheath on first action bars or on the second action bars, and it is fixed through the insulating sheath fastening bolt on the action bars insulating sheath. The utility model discloses simple structure, convenient to use, the action bars is insulating effectual, and specially adapted high -voltage circuit maintains the maintenance.