Automobile steering performance testing device

The invention discloses an automobile steering performance testing device, which comprises a chassis and a test board arranged above the chassis, and is characterized in that the test board is connected with the chassis through a lifting mechanism; a rotating device is arranged on the test board relative to the test board, and an automobile supporting structure and a test structure are arranged atthe two sides of the rotating device respectively; the rotating device comprises a rotating shaft arranged on the surface of the test board and a lantern ring sleeving the outer wall of the rotatingshaft; the automobile supporting structure comprises a first hydraulic cylinder fixed to one side of the lantern ring, a connecting block is arranged on the side, away from the lantern ring, of the first hydraulic cylinder, a second hydraulic cylinder is fixed to the upper surface of the connecting block, and a top plate is installed at the top end of the second hydraulic cylinder. Guide wheels are arranged in the lower su