Aimed at vibration problems of a particular frequency, optimizes the parameters of the damping vibration absorber for the vibration absorption. Analyzed the cantilever beam modal, obtained the frequency of maximum contribution to vibration and determined the installation position of absorber; Applied the single free induction method to obtain equivalent mass and equivalent stiffness of dynamic vibration absorber on main vibration system installation position and built an equivalent single degree freedom system; Established the absorber mathematical model, and deduced theoretically the analytical solution for a single degree dynamic absorber and obtained three parameters for the absorber. Taking the cantilever beam as an example, applied Abaqus software to simulate the vibration response of test points attached to the vibration absorber front and back. The results showed that the vibration of test points was greatly decreased and the effectiveness of absorber was verified.