The utility model discloses a support foot plate. The support foot plate comprises a ball head recess (1) and a limit handle (2), wherein a mounting groove is formed on the side wall of the ball head recess; the limit handle is rotatably hinged to the mounting groove through a pin shaft (3); one end of the limit handle extends to the ball head recess; and the limit handle is connected with a return spring (4). According to the support foot plate, a ball head at the tail end of a vertical oil cylinder is limited in the ball head recess of the support foot plate by the limit handle rotatably arranged on the ball head recess, and a connection relationship between the vertical oil cylinder and the support foot plate is kept by the return spring, so that misoperation is prevented; and the support foot plate has a simple structure, is reliably fixed with the vertical oil cylinder, and is convenient to detach, the misoperation can be prevented, operation complexity and workload are greatly reduced, and efficiency is improved.