To provide a technique for improving durability of a diaphragm by improving an electrolytic bath of an electrolytic ionized water generator and enabling electrolysis to be executed at a low voltage.

An electrode plate 8 is disposed in an electrolyzing chamber 2 of an electrolytic solution of the electrolytic bath 1, the electrolytic solution is introduced therein by a pump from an electrolytic solution circulating tank 9 disposed at the outside and a circulation system of a cathode chamber electrolytic chamber 2 is constituted by a pipe. An anode chamber 3 isolated by an anion exchange membrane 4 is divided, water is not directly flown into the anode chamber in which the electrode plate 8 is arranged, a water introducing pipe 6 is attached to an outside anode chamber divided by a shielding plate 5, voltage is applied thereto while flowing water and acidic water is taken out of water discharging pipe 7.