The invention relates to a multifunctional spa device. It is mainly that an inlet of a pump controlled by a circuit is additionally connected to a vent pipe, an outlet of the pump is connected to a jet, and the pump sucks a water flow through an intake pipe while air is simultaneously sucked through the vent pipe to be mixed with the water flow in the pump. An outlet disk is configured in the jet, and pores are distributed on an outer circumference of the outlet disk. With the jet inside-out to transmit the air-mixing water flow, the air-mixing water flow is further compressed and released through the pores, thus to output water flows or the water columns carried with ultramicro bubbles.
