A carbonated water dispenser

Provided is a carbonic acid water dispenser that can reduce the time from when a carbonic acid water generation switch is turned on to when carbonic acid water is obtained. A carbonic acid water dispenser 1 for dissolving carbonic acid in drinking water under pressure to generate and discharge carbonic acid water, comprising: A drinking water supply part 200; a carbon dioxide gas supply part 300; a water discharge part 400; an internal pressure control part 500; The agitation unit 600, and the cooling unit 800, wherein the control unit 10 discharges the carbonic acid water generated by the generation unit 100 from the water discharge unit 400, A predetermined amount of drinking water is supplied to the generation unit 100, and an instruction is given to the drinking water supply unit 200 and the cooling unit 800 so that the temperature of the drinking water becomes equal to or...