To provide a hydrogen water production device, wherein the decomposition efficiency of water in an electrolytic cell can be increased so as to efficiently feed gaseous hydrogen.

Bath water (warm water) in a bathtub 103 and gaseous hydrogen generated by electrolyzing water in an electrolytic cell 116 are fed into a gas-liquid mixing tank 102. Regarding the bath water, the gaseous hydrogen is dissolved in the gas-liquid mixing tank 102, and it is again jetted inside the bathtub 103. A suction pipe 105 of feeding the bath water from the bathtub 103 to the gas-liquid mixing tank 102 is piped so as to be in contact with the circumference of the electrolytic cell 116 and be wound therearound, and an electrolytic solution stored in the electrolytic cell 116 is warmed by the heat of the bath water flowing through the inside of the suction pipe 105.