There is provided a membrane electrode assembly and an organic hydride manufacturing device capable of obtaining higher energy efficiency even if manufacturing organic hydride in one step with a single device. A membrane electrode assembly in which a cathode catalyst layer (22) and an anode catalyst layer (23) are placed to sandwich a solid polymer electrolyte membrane (21), wherein the cathode catalyst layer (22) includes catalytic metal (24) which causes hydrogenation of unsaturated hydrocarbons to organic hydrides, and a carrier (25) of the catalytic metal (24), and the carrier (25) provides on its surface a functional group (27) which decreases wettability of the unsaturated hydrocarbons. And an organic hydride manufacturing device using the membrane electrode assembly.