PROBLEM TO BE SOLVED: To provide a user-friendly hydrogen water server.SOLUTION: A hydrogen water server 1 comprises an electrolytic bath 4 that is separated by a diaphragm 43 into an anode chamber 40A and a cathode chamber 40B and produces hydrogen water in the cathode chamber 40B by electrolyzing supplied water. The server 1 provides the hydrogen water produced in the electrolytic bath 4. The hydrogen water server 1 is further comprises a water storage tank 3 which stores the hydrogen water produced in the cathode chamber 40B. The hydrogen water server 1 is thus capable of always providing the hydrogen water upon request of a user, which improves usability of the hydrogen water server 1.SELECTED DRAWING: Figure 1