A portable apparatus for producing hydrogen water, comprising: a container positioned at an upper part and configured to store water; a hydrogen generating unit positioned at a lower part of the container, and configured to dissolve hydrogen generated by electrolyzing water stored in the container, and convert the water in the container into hydrogen water; and a power supply unit configured to apply power to the hydrogen generating unit, wherein the container is a water bottle having an outlet, and wherein the hydrogen generating unit includes: a case provided with an insertion opening, to which a part of the outlet of the water bottle is inserted, at an upper part thereof; an electrode unit, which is installed at a lower end part of the insertion opening, includes one electrode disposed at a side facing the insertion opening, the other electrode disposed on an opposing surface of one electrode, and a partition film interposed between one electrode and the other electrode, and decomposes water stored in the water bottle inserted into the insertion opening to generate hydrogen, and the power supply unit is a battery embedded in the case and configured to apply power to the electrode unit, wherein the insertion opening is manufactured with a size at which a mouth of the outlet of the water bottle may be inserted into the insertion opening, wherein the outlet of the water bottle is inserted into the insertion opening in a state where the water bottle is stood upside down, and wherein a lateral wall is installed on an internal wall of the insertion opening. a container positioned at an upper part and configured to store water; a hydrogen generating unit positioned at a lower part of the container, and configured to dissolve hydrogen generated by electrolyzing water stored in the container, and convert the water in the container into hydrogen water; and a power supply unit configured to apply power to the hydrogen generating unit, wherein the container is a water bottle having an outlet, and wherein the hydrogen generating unit includes: a case provided with an insertion opening, to which a part of the outlet of the water bottle is inserted, at an upper part thereof; an electrode unit, which is installed at a lower end part of the insertion opening, includes one electrode disposed at a side facing the insertion opening, the other electrode disposed on an opposing surface of one electrode, and a partition film interposed between one electrode and the other electrode, and decomposes water stored in the water bottle inserted into the insertion opening to generate hydrogen, and the power supply unit is a battery embedded in the case and configured to apply power to the electrode unit, a case provided with an insertion opening, to which a part of the outlet of the water bottle is inserted, at an upper part thereof; an electrode unit, which is installed at a lower end part of the insertion opening, includes one electrode disposed at a side facing the insertion opening, the other electrode disposed on an opposing surface of one electrode, and a partition film interposed between one electrode and the other electrode, and decomposes water stored in the water bottle inserted into the insertion opening to generate hydrogen, and the power supply unit is a battery embedded in the case and configured to apply power to the electrode unit, wherein the insertion opening is manufactured with a size at which a mouth of the outlet of the water bottle may be inserted into the insertion opening, wherein the outlet of the water bottle is inserted into the insertion opening in a state where the water bottle is stood upside down, and wherein a lateral wall is installed on an internal wall of the insertion opening.