Dual-purpose stair step capable of being automatically switched

The utility model relates to a dual-purpose stair step capable of being automatically switched. The dual-purpose stair step comprises a supporting plate, an external rotating mechanism, a step frame, an electric cylinder, a sliding rail assembly and a linkage mechanism. The supporting plate is movably connected with the step frame through an external rotating mechanism. The size of the supporting plate is matched with the size of the step frame. A mounting block is arranged on the step frame; the installation block is connected with the induction device through a spring, the shape of the induction device is matched with that of the supporting plate, the electric cylinder is specifically located in the step frame, a piston rod of the electric cylinder is connected with the linkage mechanism, the linkage mechanism is movably connected with the supporting plate, and the linkage mechanism is in sliding connection with the step frame through a sliding rail assembly. The utility model provides a dual-purpose stair