A novel reconfigurable surface acoustic wave （SAW） resonator has been designed through simulation. The design integrates vanadium dioxide（VO₂）, a phase-change material, with the resonator on a single chip to achieve a compact reconfigurable resonator. By utilizing the phase-change properties of VO₂, portions of the SAW resonator’s electrodes are replaced with VO₂. The operating state of these VO₂ electrodes is thermally controlled, enabling frequency tuning between two different states. With an electrode width of 1.15 μm （corresponding to a theoretical wavelength λ of 4.6 μm）, simulation results demonstrate that the reconfigurable resonator’s frequency can be tuned to 472 MHz and 774 MHz, exhibiting electromechanical coupling coefficients of 7.1% and 5.6%, respectively, and the tuning range of the resonator peaks at 302 MHz. Parametric simulations of electrode thickness reveal that the SAW resonator attains its highest electromechanical coupling coefficient at 0.12λ, which facilitates broader bandwidth for subsequent reconfigurable SAW filters. Additionally, we propose a fabrication process for VO₂-based reconfigurable SAW resonators, offering practical design guidance.