Spiral stair structure

The utility model relates to the field of stairs, in particular to a spiral stair structure which comprises an outer side plate, an inner side plate and a pedal arranged between the outer side plate and the inner side plate. A plurality of openings are formed in one side face of the outer side plate and one side face of the inner side plate, the openings in the outer side plate are formed in the length direction of the outer side plate at intervals, and each opening extends in the direction perpendicular to the length direction of the outer side plate. The multiple openings in the inner side plate are formed in the length direction of the inner side plate at intervals, each opening also extends in the direction perpendicular to the length direction of the inner side plate, and the adjacent openings are connected in an adhesive mode. The mounting structure has the advantages of being simple in mounting process and saving time. 本申请涉及一种旋转楼梯结构，涉及楼梯的领域，其包括外侧板、内侧板以及设置在所述外侧板和内侧板之间的踏板；所述外侧板和内侧板的一侧面上均开设有多个开口，所述外侧板上的多个