An electrolyzed water generating apparatus 1 includes: an electrolysis tank D containing a first electrode chamber Da having a cathode 6a, a second electrode chamber Db having anode 6b, and a separating membrane Sp separating the first electrode chamber Da and the second electrode chamber Db from each other； a first water inlet path 4a supplying the first electrode chamber Da with raw water from outside； a first water outlet path 7a carrying to outside hydrogen-containing electrolyzed water generated by electrolysis in the first electrode chamber Da； and a charge amount adjuster 10 for adjusting, during the electrolysis, an amount of electrical charge to be provided to the hydrogen-containing electrolyzed water. The charge amount adjuster 10 adjusts the amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water through control of an electrolytic current or an electrolytic voltage.
