Abstract: Disclosed is an ultrasonic surgical system, comprising: an ultrasonic transducer used for converting an alternating current signal into vibration; and an ultrasonic amplitude transformer used for amplifying the amplitude of the vibration generated by the ultrasonic transducer, wherein the product L1×C1 of a dynamic equivalent inductance L1 and a dynamic equivalent capacitance C1 of the ultrasonic surgical system in a no-load state and the product L?×C? of a dynamic equivalent inductance L? and a dynamic equivalent capacitance C? of the ultrasonic surgical system in an on-load state satisfy the relational expression ? 1 - L 1 × C 1 L ? × C ? ? = ? , such that a resonance frequency fs of the ultrasonic surgical system in the no-load state and a resonance frequency fs? thereof in the on-load state satisfy the relational expression ? 1 - f s ? f s ? = ? , wherein a is less than or equal to 0.1%, and preferably ? is less than or equal to 0.05%.