Prefabricated stair structure

The utility model discloses a prefabricated stair structure, which comprises a stair main body, the stair main body comprises a top platform, steps and a bottom platform, and a structural frame is sleeved in the stair main body. While the strength of the whole stair board structure is guaranteed, materials can be saved to the maximum extent, an existing latticed welding structure is omitted, the machining time is shortened, machining data of various materials can be directly obtained by utilizing common parameters for calculation, then the machining efficiency is improved, production line type production can be achieved easily, and the production cost is reduced. The problems that when an existing prefabricated stair structure is produced, the welding process is time-consuming and troublesome, and materials are wasted are effectively solved, and meanwhile the problem that the production process of the existing stair structure is not beneficial to production line operation is solved. 本实用新型公开了一种预制式楼梯结构，包括楼梯主体，楼