Abstract: This paper presents a broadband energy harvesting structure based on the piezoelectric effect and the magneto-elastic-electric coupling effect of piezoelectric array dual-phase energy harvester, which can be used to simultaneously capture mechanical and magnetic energy distributed extensively in the environment, so as to realize the self-powering for low-power electric devices. The geometric model of the energy harvester is established and the numerical simulation is carried out by using the finite element software COMSOL, and the influences of different loadings as well as component material parameters on the energy harvester are analyzed. It is demonstrated that the piezoelectric array dual-phase energy harvester can simultaneously and effectively harvest both mechanical energy and magnetic energy. The amplitude of output voltage is enhanced, and a wider resonance bandwidth is achieved when the collecting piezoelectric units are connected in series. The resonance frequency of the harvester can be tuned flexibly by altering the component material parameters. Consequently, the optimal output power can be obtained. The simulation results of this paper provide a theoretical guidance for designing high-performance energy harvesters