An electrolytic ion water generation method, which involves use of a generation tank configured to store raw water, an electrolytic solution tank configured to store an electrolytic solution, an electrolytic bath including a cathode chamber and an anode chamber partitioned by a cation exchange membrane, and a DC power source configured to apply a voltage between electrode plates including a cathode plate provided in a vertical posture in the cathode chamber and an anode plate provided in a vertical posture in the anode chamber, to generate electrolytic ion water by supplying the raw water in the generation tank to the cathode chamber of the electrolytic bath connected to the generation tank, by supplying the electrolytic solution in the electrolytic solution tank to the anode chamber of the electrolytic bath connected to the electrolytic solution tank, and by applying a voltage between the electrode plates with use of the DC power source in a state in which the raw water is caused to enter the cathode chamber and the electrolytic solution is caused to enter the anode chamber to allow a cation generated in the anode chamber due to electrolysis to be reduced with raw water in the cathode chamber, the electrolytic ion water generation method comprising: charging potassium carbonate into a receiving container separate from the electrolytic solution tank, which is arranged on an upper side of the electrolytic solution tank, the receiving container including a cup-shaped portion formed of a mesh member and configured to receive potassium carbonate, the receiving container being at a position where a bottom portion of the cup-shaped portion is soaked in an electrolytic solution in the electrolytic solution tank; stirring the electrolytic solution containing the potassium carbonate in the electrolytic solution tank with stirring means provided below the receiving container on a bottom surface side in the electrolytic solution tank; causing the potassium carbonate in the receiving container to dissolve in the electrolytic solution in the electrolytic solution tank; and subjecting the stirred electrolytic solution to electrolysis to allow a cation generated in the anode chamber due to the electrolysis to be reduced with raw water in the cathode chamber, thereby generating electrolytic ion water. charging potassium carbonate into a receiving container separate from the electrolytic solution tank, which is arranged on an upper side of the electrolytic solution tank, the receiving container including a cup-shaped portion formed of a mesh member and configured to receive potassium carbonate, the receiving container being at a position where a bottom portion of the cup-shaped portion is soaked in an electrolytic solution in the electrolytic solution tank; stirring the electrolytic solution containing the potassium carbonate in the electrolytic solution tank with stirring means provided below the receiving container on a bottom surface side in the electrolytic solution tank; causing the potassium carbonate in the receiving container to dissolve in the electrolytic solution in the electrolytic solution tank; and subjecting the stirred electrolytic solution to electrolysis to allow a cation generated in the anode chamber due to the electrolysis to be reduced with raw water in the cathode chamber, thereby generating electrolytic ion water.