The invention discloses a multifunctional bathtub, which comprises a round-barrel type bathtub, a wave wheel rotary disc, an electronic water drainage valve, an electronic water supply valve, a water leakage stepping plate, spraying openings, a scrubbing device, a warm-air machine, a control panel, an integrated sensor module and a control circuit, wherein the periphery of the inner wall of the bathtub is communicated with the spraying opening of the electronic water supply valve; the scrubbing device is arranged on the bathtub wall; the warm-air machine is used for drying the body. By utilizing the scrubbing device with a vibration massage function, bathing is carried out with the aid of running water which simulates wave and is generated by the wave wheel rotary disc, so that the bathing is labor-saving and comfortable, and has a physical therapy effect; after the bathing is completed, people can instantly take a shower of the whole body in the bathtub through a plurality of surrounding spraying openings and the whole body can be dried by utilizing the warm-air machine, and the wiping is eliminated; by the function of the control panel, full automatic control of water infusion, water drainage, assisted bathing, massaging and drying also can be realized, and one bathtub has a full-process comprehensive function of bathing, such as scrubbing, massaging, running water assisted washing, shower and drying, so that the bathing is quick and convenient.