The invention relates to the field of a transformer substation, in particular to a high-voltage circuit breaker and a conducting rod. The high-voltage circuit breaker comprises a circuit breaker electric connecting base, wherein the circuit breaker electric connecting base is connected with the conducting rod; the conducting rod comprises a cover plate and a conducting tube connected with the cover plate; a connecting boss extends from the side, connected with the conducting tube, of the cover plate; a spigot structure for being matched with the conducting tube is arranged at the end, far away from the cover plate, of the connecting boss; and the conducting tube is welded with the connecting boss at the spigot position. When the high-voltage circuit breaker and the conducting rod, provided by the invention, are manufactured, processing and polishing after welding are facilitated, so the processing difficulty of equipment is reduced.