Automobile suspension testing device

The utility model relates to an automobile suspension test device, comprising an experiment platform; the stress part is used for being connected with a steering knuckle of the automobile suspension; the force application device is arranged on the experimental platform and is used for applying force to a stressed part; the test platform is characterized in that the test platform further comprises a supporting structure which is used for being connected with an auxiliary frame of the automobile suspension, so that the auxiliary frame of the automobile suspension keeps a preset distance from the test platform, and under the state that the force application device applies force to the stressed part, the supporting structure can jointly apply force to a steering knuckle of the automobile suspension and the auxiliary frame. The device has the advantages that the device reproduces the load bearing capacity of each part of the actual automobile suspension to the maximum extent, compared with a whole automobile test