NOVELTY - The hydrogen water feeder comprises a water storage part for storing an electrolyzed water, a hydrogen water generating unit producing the hydrogen water, and a hydrogen water emission part emitting the hydrogen water supplied from the hydrogen water generating unit. The hydrogen water generating unit comprises a set of electrodes that are separately placed in a diaphragm-free electrode portion and a space whose one side is connected with the water emission part and the other side is connected with the water storage part. A set of grooves are positioned at an internal space of a case.    USE - Used as a hydrogen water feeder.    ADVANTAGE - The feeder dissolves the hydrogen in the cold water just before passing out, so that the water emitted from the hydrogen water emission part has high amount of the hydrogen, and minimizes time difference to dissolve hydrogen in the cold water.    DETAILED DESCRIPTION - The hydrogen water feeder comprises a water storage part for storing an electrolyzed water, a hydrogen water generating unit producing the hydrogen water, and a hydrogen water emission part emitting the hydrogen water supplied from the hydrogen water generating unit. The hydrogen water generating unit comprises a set of electrodes that are separately placed in a diaphragm-free electrode portion and a space whose one side is connected with the hydrogen water emission part and the other side is connected with the water storage part. A set of grooves are positioned at an internal space of a case. A control unit changes the polarity of the electrode into a constant cycle, and controls the voltage and current applied to the electrode according to the state of the water supplied from the water storage part or the characteristic the hydrogen water feeder, where the total number of the electrodes is odd numbers, the adjacent electrodes have different polarity, and the electrode has a mesh structure. The electrodes have circular, polygon or slit shaped through-hole.