The invention discloses a vortex drainage device and a drainer. The vortex drainage device includes a water inlet end cover, a drainage rotor and a drainage pipe. The drainage rotor includes a rotating drum with openings at both ends and a rotating drum provided in the rotating drum. Vortex diversion vanes, the rotating drum is rotatably installed inside the drain pipe and can rotate relative to the drain pipe, the water inlet end cover is arranged at the water inlet end of the drain pipe, and the water inlet end cover A water inlet is provided on it, and the water inlet is communicated with the rotating drum. In the eddy current drainage device and the drainer, when water is drained, water flows in from the water inlet, and then flows into the drain pipe through the rotating drum. The vortex drainage is realized through the vortex drainage vanes of the drainage rotor, so that the water flow automatically forms a vortex, which can effectively increase the water drainage pressure, improve the drainage speed, speed up the drainage of accumulated water, and improve the drainage efficiency.