A spouting instrument is mounted on the surface side of a bathtub and spouts out water through a first spout port to the bathtub. To a first water supply port of the spouting instrument, water from a water supply source is supplied. The water supplied through the first water supply port flows through a first flow passage to the first spout port. The first flow passage includes a first ejector. The first ejector mixes air into the water flowing from the first water supply port to produce foam and sends the foam to the first spout port.
