When the vibratory roller is pressing the road, the shock absorber often produces large impact stress due to uneven ground or hitting an obstacle. In order to avoid damage to the rubber shock absorber caused by excessive impact stress, a rubber shock absorber can be installed between the upper and lower vehicles of the roller. This kind of buffer is usually fixed on the upper vehicle and maintains a certain clearance with the lower vehicle. When the vibratory roller is in a normal working state, the buffer does not work; when the roller has a large impact, the vehicle gets off and lifts up under the impact of external force and hits the buffer, thus preventing the shock absorber from being too large deformation.