Abstract: A hydrogen generating apparatus according to an embodiment of the invention may include an electrolyte bath, which contains an electrolyte solution, and in an inside surface of which a first groove and a second groove are formed; a first electrode, which is coupled to the first groove with a predetermined distance from either end of the surface of the electrolyte bath, and which is configured to generate electrons; and a second electrode, which is coupled to the second groove with a predetermined distance from either end of the surface of the electrolyte bath, and which is configured to generate hydrogen using the electrons and the electrolyte solution. By using this hydrogen generating apparatus, the volume for holding the fuel can be increased, the gaps between electrodes can be reduced, and the circulation of water can be facilitated to increase the duration of the reactions.