A spherical-confocal-split array with dual frequency of fundamental and harmonic superimposition includes: array elements which are spherically confocal, whose quantity is an even number, wherein a half of the array elements operate with a lower frequency, and the other half of the array elements operate with a higher frequency； both the lower frequency and the higher frequency are MHz high-frequencies； each of the array elements corresponds to a frequency drive； array element beams don't superimpose outside the focal region； each of the array elements is connected to a channel amplifier (3) through corresponding impedance matching (2)； and a multi-channel waveform controller (4) is connected to the channel amplifier (3) for controlling amplitudes and phases of all channels. The dual-frequency spherical sectorial split array is able to generate split multi-foci of the focal plane with the dual frequencies； and control strong interference of transient cavitation clouds at the adjacent foci.
