In this paper,the characteristic frequency,transmission loss and displacement vector of a new hybrid phononic crystal are calculated by the finite element method,and the conditions of generating antiresonance are derived theoretically.The results show that the hybrid phononic crystal has a number of flat band gaps in the low frequency range,and less influencing factors of band gap coupling,has a wider band gap than the general local resonant phononic crystal and the Bragg scattering phononic crystal.In addition,the effects of material and structural parameters of the hybrid photonic crystal on the band gap are analyzed and calculated by using the origin antiresonance model.The research shows that the band gap of the hybrid photonic crystal accounts for more than 90% at less than 2 500 Hz below.