In order to reduce vehicle interior noise and improve ride comfort， a method of reducing interior noise by using dynamic vibration absorber is carried out. The noise of the rear seats exceeded the acceptable range of passengers during the development of a SUV model. After noise testing and subjective evaluation combined with operational deflection shape （ODS）analysis， the subframe has a large resonance coupling with the vehicle body in the frequency range of 200~300 Hz. Aiming at the existing problems， a scheme of adding a damped dynamic vibration absorber to the subframe is proposed， and a mathematical model of the vibration absorber is established. Moreover， the natural frequency of the vibration absorber is tested to select a suitable vibration absorber. The vibration transfer function （VTF） test of the subframe is carried out to determine the installation position of the vibration absorber， and finally the actual test is executed to verify the effectiveness of the scheme. The research results show that after the optimization by adding vibration absorber to the subframe， the peak noise of the rear seats at 212 Hz can be reduced by 4 dB and the noise at 232 Hz can be reduced by 6?dB. Meanwhile， it can be reduced by an average of 3 dB in the frequency range of 200~250 Hz， which can achieve good noise reduction effect. This application scheme can provide an engineering solution for the control of vehicle vibration and noise.