To to provide an electrolytic water cooling device capable of taking out alkaline water at a nearly stabilized cooling temperature, and being miniaturized and lightened in its weight.

This device is provided with a water purifier 2 and an electrolytic cell 4 for electrolyzing purified water, having Peltier elements 16, 16 whose heat absorption parts are attached to the cathode of the electrolytic cell 4 to transfer heat, and based on the temperature of the purified water detected with a purified water temperature detection means 24, the Peltier elements are controlled and the alkaline water is cooled. Also, a cooled temperature detection means of the alkaline water is provided and the cooled water temperature detection means detects the temperature of the alkaline water controlled by the purified water temperature detection means 24, and an impressing electric current to the Peltier elements is controlled, then the temperature of the alkaline water is preferably stabilized.