The present invention provides a shower apparatus which allows a user to enjoy spray of water with a voluminous feel even when a small volume of water is discharged as well as with a comfortable stimulus sensation of an instantaneous flow rate of the spray varying greatly. The shower apparatus periodically varies a volume of air taken into an aeration unit by periodically changing a traveling direction of a water stream ejected to the aeration unit from a throttle unit and produces pulsating spray by varying the instantaneous flow rate of bubbly water discharged from a nozzle unit.