Automatic Ball Balancer (ABB) can completely eliminate the unknown unbalance of the rotor in the rotational speed range higher than the major critical speed, but its disadvantage is that it will cause resonance response with large amplitude and unstable oscillation near the critical speed. This paper proposes to add Dynamic Vibration Absorber (DVA) to overcome its shortcomings and improve its vibration suppression performance. According to the Lagrange equation, the dynamic equations for unbalanced vibration of the rotor are established when DVA and ABB are used separately and together. The harmonic balance method is used to solve the amplitude expression of the new coupling system, and the influence laws of each parameter on the steady-state amplitude-frequency curve are studied. Steady-state amplitude-frequency characteristic diagram and transient amplitude time-domain curve are obtained by Runge-Kutta numerical method. The comparison results show that the new scheme combining with the two methods effectively reduces the vibration level of the rotor when it passes through the critical resonance region, and makes the rotor vibration attenuate to zero amplitude more quickly above the critical speed. Therefore, the purpose of integrating the advantages of the two devices is achieved, and the vibration suppression effect is better.