Abstract: Comparing the similarities and differences of structural requirements, such as the deformation of the profiled steel sheet, the length of the overlap along the longitudinal direction, and the support length at the end of the plate, in the Chinese, American and European standards, the actual reasion and structural principles were analyzed, and the manufacturer's sheet metal requirements were compared. It could be concluded that the Chinese standard had more reasonable requirements on the support length of the profiled steel-concrete composite slab than the European standard. China should standardize the deflection limit of the profiled steel sheet and its deflection under different load types, and make a detailed division. At the same time, it was recommended to seal the longitudinal plate end lap joint part of the Chinese standard, thereby reducing the overlap length of the roof panel and saving steel.