Abstract: Experiments were performed to study the effect of varies excitation level relative density and material properties on the vibration characteristics of Metal Rubber (MR).Some general disciplinarians of characteristics of MR were found.Based on non-rigidity and non-damping,the method of describing vibration performance of MR was presented,steady response was calculated,and the results were contrast to testing results.The results show that the large the vibration intensity,the better the damping effet will be.