Aiming at the flutter problem of boring boring deep hole with large length diameter ratio boring cutter, a mathematical model of damping boring bar is established according to the theory of dynamics. Several key parameters affecting the damping effect were obtained: the mass ratio of dynamic absorber and main vibration system, natural frequency ratio and damping ratio of damper. The size design of the vibration boring and boring bar was completed, the parameters of the dynamic vibration absorber, the key dimensions and materials of the core components, the dimensions and materials of the damping block, the internal and external diameter and the axial length of the spring rubber, the relative material and stiffness value, the damping coefficient of the damping fluid and the related materials were made. The solid three-dimensional (3D) model of the vibration boring and boring bar was established.The vibration damping boring bar was simulated and verified by ADAMS software. The amplitude frequency response curve of the damping boring bar was obtained, and the correctness of the key parameters affecting the damping effect was verified by simulation. The spring stiffness value and the viscous damping ratio were obtained. Then the simulation comparison was made for the two kinds of different types of boring bars, and the damping amplitude of the vibration boring and boring bar was about three times more than that of the solid bell rod.The amplitude of the boring bar can be greatly suppressed,and shorten the vibration period quickly, which has a good inhibition effect on cutting chatter of machine tools.