Aiming at the problem of unsteady vibration generated by the vertical mill during the grinding process, a particle damping vibration reduction device installed at the rocker arm of vertical roller mill is proposed to reduce the vibration of vertical mill. First of all, the grinding system of the vertical mill is modeled and analyzed dynamically, and two models with and without vibration dampers are established for comparative analysis, and then the influence of different filling rates and damping materials on the vibration damping effect is investigated. The results show that: under the same external excitation, the vibration of the rocker arm after the installation of vibration damper has been significantly reduced, the filling rate of particle damping in 70%, and the higher the density and modulus of elasticity of the filler material, the better the vibration damping performance, up to 53% vibration damping effect can be achieved. By installing particle damping vibration damper on the rocker arm, the unsteady vibration of the vertical mill can be reduced.