Prefabricated building prefabricated stair hoisting system

The utility model relates to an assembly type building prefabricated stair hoisting system, and relates to the technical field of building construction, the assembly type building prefabricated stair hoisting system comprises a crane, a plurality of first steel cables connected to a crane hook and a hoisting frame fixed to the ends, away from the crane hook, of the first steel cables, the prefabricated stair is provided with a connecting assembly, and the connecting assembly comprises a plurality of connecting rings; the multiple connecting rings are connected with second steel cables, the hoisting frame is provided with an adjusting assembly for adjusting the inclination amplitude of the prefabricated stair, and the ends, away from the connecting rings, of the second steel cables are connected to the adjusting assembly. The adjusting device has the effect of conveniently adjusting the inclination amplitude of the prefabricated staircase. 本申请涉及一种装配式建筑预制楼梯吊装系统，涉及建筑施工技术领域，其包括吊机、连接于吊机挂钩的若干第一钢缆以及固定于第一钢缆背离吊机挂钩一端的吊