The utility model provides a bus connecting structure of a high-voltage switch cabinet. The utility model relates to the technical field of switch cabinets, the utility model discloses a high-voltageswitch cabinet bus connecting structure. Switch cabinet, an empty cylinder is inserted into the side wall of the switch cabinet. The end, away from the switch cabinet, of the hollow cylinder is fixedly connected with a hollow outer screw cylinder. One end, far away from the switch cabinet, of the hollow outer screw cylinder is fixedly connected with conical sheets in an annular array; the outer wall of the hollow outer screw cylinder is sleeved with an inner screw cylinder in threaded connection with the hollow outer screw cylinder. The section of the conical sheet is a right trapezoid; an insulating layer is adhered to the inner wall of the conical sheet; the utility model discloses a high-voltage switch cabinet bus connecting structure. After the bus is inserted into the switch cabinet,the bus can be fixed by rotating the inner screw cylinder, the operation is simple and convenient, the efficiency of bus connection work is greatly improved, the arc block is fixed with the bus and ispulled to the switch cabinet under the action of the tension spring, the connection stability of the bus is improved, and meanwhile, the bracket plays a role in supporting the bus.