Special mould for rubber stair steps

The utility model discloses a special mould for rubber stair steps, which comprises an upper mould and a lower mould, wherein the upper mould comprises a foot-pedal surface moulding plate and a front vertical plane moulding plate, a forming buckle corner is combined between the two moulding plates, the front vertical plane moulding plate is obliquely arranged inwards for a set angle so as to enable the angle of the buckle corner to be smaller than 90 DEG. The buckle corners of the stair steps produced by the special mould for the rubber stair steps, provided by the utility model, incline inwards for a certain angle, so that the buckle corners can produce a certain pressure to the vertical planes of stairs during the construction, less or no mucilage glue is required to be used, and the appearances are more artistic.