PROBLEM TO BE SOLVED: To provide a shower device capable of generating a large amount of superfine bubbles having a uniform size.SOLUTION: A shower 1 (a superfine bubble generator for a bathroom) for discharging water including superfine bubbles includes: a water supply part 2 for supplying water; a water supply pipe 3 (a water supply passage) connected to the downstream side of the water supply part 2; a discharge part 4 connected to the downstream side of the water supply pipe 3 that includes a plurality of water sprinkling holes 4a; a porous bubble generation medium 5, a part or the whole of which is a composite body of graphite and non-metal; a gas supply passage 6 through which gas sent to the inside of the bubble generation medium 5 passes; and gas supply means 7 provided on the upstream side of the gas supply passage 6 for sending the gas to the inside of the bubble generation medium 5. A flow rate opening/closing valve 11 (a valve) for opening/closing the gas supply passage 6 is provided to the water supply part 2, and when water flows from the water supply part 2, the flow rate opening/closing valve 11 is turned into an open state.SELECTED DRAWING: Figure 1