The invention discloses high-voltage switch equipment of a dual-bus system. The high-voltage switch equipment comprises an equipment shell, a cable room, a circuit breaker room, a second mounting shell and a first mounting shell; a first pressure releasing tray is mounted on one side of the equipment shell; the cable room and the circuit breaker room are arranged in the equipment shell in sequence; a vacuum bubble is mounted on the inner wall of the circuit breaker room above a cable socket through a bolt; and a circuit breaker operation mechanism, a three-station isolation switch operation mechanism and a comprehensive protector are mounted in the equipment shell on one side of the circuit breaker room through bolts in sequence. By virtue of the setting of the series of the structures, the high-voltage switch equipment achieves extremely high safety; and in addition, by virtue of the setting of the dual-bus system, the equipment can be used more conveniently.