Abstract: There are many cantilever structures in agricultural machinery such as handrails and steering wheels. The physical and mental health of the operator is seriously affected by the violent vibration of these structures because of the direct contact on the human body, and the vibration-related diseases are easily induced. In response to this problem, the particle damper was introduced into the vibration reduction design of cantilever structures in this paper. Based on the traditional particle damper, a double-layer particle damper with internal buffer is proposed to improve the vibration damping ability of the particle damper in a small vibration environment. The vibration damping effect of the traditional particle damper and the new one was investigated under steady-state sinusoidal excitation. The results show that particle dampers can effectively reduce the vibration of the cantilever structure, and the acceleration attenuation rate is generally greater than 20% and even exceeds 40% in some cases. Compared with the traditional particle damper, the double-layer particle damper with internal buffer shows more excellent damping ability.