The invention discloses a device for testing contact rigidity, and comprises a friction force testing component, a positive pressure loading component, freely supported beams, a right support, a left support and a base, wherein the freely supported beams are installed in U-shaped grooves of the right support and the left support; the friction force testing component, the positive pressure loadingcomponent, the right support and the left support are arranged on the base. When loaded with an initial positive pressure and a shock excitation load, the device for damping test can test the parameters of the tangential contact rigidity of a contact surface, such as different contact surface shapes, different initial positive pressures, the properties of different experiment sample materials, etc. and analyze the rule of influence of the contact surface shape, the initial positive pressure and the experiment sample material on the contact rigidity.