Abstract: Energy crisis has been attracted many reseachers’ attention, how to recycle vibrational energy in the environment is a new strategic concept on development of green energy. Based on the piezoelectric vibration energy harvesting technology,a new type damper is designed and manufactured. Vibration responses characteristics of the damper are experimentally studied under different applied electric controls and excited amplitudes. Experimental results show that,under self-powered state,, can effectively change the structure of the shock absorber damping;