An electric automobile includes a fuel cell for power generation by supply of hydrogen and oxidizing agent, a hydrogen generating device for generating a gas containing hydrogen to be supplied to the fuel cell, and a motor driven by electricity generated by the fuel cell. The hydrogen generating device generates gas containing hydrogen by decomposing an organic compound-containing fuel, and includes a proton conductive partition membrane, a fuel electrode provided on one surface of the partition membrane to directly generate the gas containing hydrogen, a device for supplying, to the fuel electrode, water and organic compound-containing fuel capable of producing a proton as a result of electrochemical oxidization which can pass through the partition membrane, an oxidizing electrode provided on the other surface of the partition membrane, a device for supplying the oxidizing agent to the oxidizing electrode, and a device for generating and collecting the gas containing hydrogen.