A sanitary washing apparatus that discharges wash water toward a private part of a user, the sanitary washing apparatus comprising: a toilet seat (WAb) on which the user sits for excretion; a washing nozzle having a water discharge, that discharges the wash water toward the private part of the user sitting on the toilet seat (WAb); a pressure variation unit that gives pressure variation to the wash water to be supplied to the water discharge; and a bubble mixed water generation unit that is provided between the pressure variation unit and the water discharge port to mix bubbles into the wash water to which the pressure variation is given by the pressure variation unit, wherein the pressure variation unit is configured to intermittently execute a pressure raising process in which a pressure of the wash water discharged from the water discharge is continuously raised over a predetermined duration such that a mass of water formed with wash water discharged from the water discharge later catching up with wash water discharged from the water discharges first intermittently arrives at the private part of the user, and the bubble mixed water generation unit includes: a squirting port that squirts the wash water to which the pressure variation is given by the pressure variation unit toward the water discharge an air introduction port that is provided between the squirting port and the water discharge to introduce air by use of a negative pressure generated by the wash water squirted from the squirting port; a bubble mixture section that is provided between the air introduction port and the water discharge to temporarily store the wash water squirted from the squirting port and mix the air introduced from the air introduction port into the stored wash water in a form of a plurality of bubbles; the apparatus being characterized in that it further comprises an air mixture amount adjustment section that adjusts an amount of air mixed in the bubble mixture section such that the wash water reaches a height corresponding to a bottom surface of the toilet seat (WAb) before the plurality of bubbles mixed in the bubble mixture section collect into a single bubble. a toilet seat (WAb) on which the user sits for excretion; a washing nozzle having a water discharge, that discharges the wash water toward the private part of the user sitting on the toilet seat (WAb); a pressure variation unit that gives pressure variation to the wash water to be supplied to the water discharge; and a bubble mixed water generation unit that is provided between the pressure variation unit and the water discharge port to mix bubbles into the wash water to which the pressure variation is given by the pressure variation unit, wherein the pressure variation unit is configured to intermittently execute a pressure raising process in which a pressure of the wash water discharged from the water discharge is continuously raised over a predetermined duration such that a mass of water formed with wash water discharged from the water discharge later catching up with wash water discharged from the water discharges first intermittently arrives at the private part of the user, and the bubble mixed water generation unit includes: a squirting port that squirts the wash water to which the pressure variation is given by the pressure variation unit toward the water discharge an air introduction port that is provided between the squirting port and the water discharge to introduce air by use of a negative pressure generated by the wash water squirted from the squirting port; a bubble mixture section that is provided between the air introduction port and the water discharge to temporarily store the wash water squirted from the squirting port and mix the air introduced from the air introduction port into the stored wash water in a form of a plurality of bubbles; the apparatus being characterized in that it further comprises an air mixture amount adjustment section that adjusts an amount of air mixed in the bubble mixture section such that the wash water reaches a height corresponding to a bottom surface of the toilet seat (WAb) before the plurality of bubbles mixed in the bubble mixture section collect into a single bubble. a squirting port that squirts the wash water to which the pressure variation is given by the pressure variation unit toward the water discharge an air introduction port that is provided between the squirting port and the water discharge to introduce air by use of a negative pressure generated by the wash water squirted from the squirting port; a bubble mixture section that is provided between the air introduction port and the water discharge to temporarily store the wash water squirted from the squirting port and mix the air introduced from the air introduction port into the stored wash water in a form of a plurality of bubbles; the apparatus being characterized in that it further comprises an air mixture amount adjustment section that adjusts an amount of air mixed in the bubble mixture section such that the wash water reaches a height corresponding to a bottom surface of the toilet seat (WAb) before the plurality of bubbles mixed in the bubble mixture section collect into a single bubble.