The same floor drainage with non falling slab and the swirling flow drainage are the two major trends of building drainage. The swirling flow water seal collector is the core component of the same floor drainage system with non falling slab. The material is PE, which is divided into upper and lower parts. The upper part of the side wall interface is connected with the toilet drainage, and the lower part of the side wall interface is connected with the floor drain drainage. The lower part of PE cyclone type water seal collector is equipped with integrated water seal, which is placed in the floor, and the upper and lower parts are drained into the riser by cyclone. There are swirl blades at the top and bottom of PE swirl type water seal collector to increase the effect of swirl drainage.