PROBLEM TO BE SOLVED: To provide a hydrogen gas supply device for an organism which can supply a clean mixed gas to an organism.SOLUTION: A hydrogen gas supply device for an organism comprises: an electrolysis cell 2 having a housing 20, a diaphragm 25 provided in the housing for partitioning inside of the housing into a cathode chamber 22 into which electrolyzed water W is introduced and an anode chamber 21 into which the electrolyzed water W is introduced, at least a pair of electrodes 23, 24 which are respectively arranged in the cathode chamber and the anode chamber sandwiching the diaphragm, and a gas outlet 204 for deriving the gas generated in the cathode chamber； a power supply 3 for applying a direct current voltage to the pair of electrode； and a dilution gas supply tool 4 for discharging a dilution gas into the electrolyzed water introduced into the cathode chamber.SELECTED DRAWING: Figure 1【課題】清浄な混合ガスを生体へ供給できる生体用水素ガス供給装置を提供する。【解決手段】筐体２０、前記筐体内に設けられて前記筐体内を被電解水Ｗが導入される陰極室２２と被電解水Ｗが導入される陽極室２１とに区画する隔膜２５、前記隔膜を挟んで前記陰極室と前記陽極室のそれぞれに設けられた少なくとも一対の電極２３，２４、及び前記陰極室にて生成されたガスを導出するガス出口２０４を含む電解槽２と、前記一対の電極に直流電圧を印加する電源３と、前記陰極室に導入された被電解水の中に希釈ガスを吐出する希釈ガス供給器４と、を備える。【選択図】図１
