A water output device having ultrasonic pulverizing function comprises a shower main body, which includes a decoration box, detachably embedded in the shower main body, or forming with the shower main body into a body and an ultrasonic pulverizing device, disposed in the decoration box. The ultrasonic pulverizing device includes: a water box, with its upper portion provided with a water input port, and with its lower portion provided with a water output port an ultrasonic wave generator, fixed to a water output port at a lower portion of the water box through a fixing block, and having a web-shape structure inside, for allowing small particles of water mist to pass through and a control device, disposed at a side of the water box, and including a power source module, a charging module, a vibration circuit module.
