: A periodic foundation (PF) plate with rotational oscillators was used for the bending-wave isolation of high-rise buildings. Previous studies concerning the PF were focused on the in-plane waves. However, seismic waves are easy to excite bending waves for the periodic foundation plate structure. In this study, the limitation of plane-wave research was broken through, and the bending-wave dispersion curves were studied. The finite element method was employed to calculate the bending-wave AZs of the PF plate, and shell element, which can consider the influence of the plate thickness, was used to calculating the AZs. The influences of the material and geometrical parameters on the bending-wave AZs were comprehensively investigated. The effectiveness of the PF was demonstrated via a three-dimensional finite element model under incident harmonic bending-waves and seismic waves. The results show that the bending-wave AZs are sensitive to the width and elastic modulus of the linkers. The bending wave AZs of PFs were lower than 10 Hz and its seismic isolation efficiency was more than 60% compared to the concrete foundation, which is sufficient for serving as a seismic isolation foundation for high-rise buildings. This system provides a new direction for base isolation of high-rise buildings, especially for the destructive bending wave.