A portable flame electric generation device having metal-supported solid oxide fuel cells includes a furnace, a heat shield structure, a plurality of metal-supported solid oxide fuel cells and a housing structure. Each of the metal-supported solid oxide fuel cells includes a porous metal substrate, a first anode layer, a second anode layer, an anode isolation layer, an electrolyte layer, a cathode isolation layer, a cathode interface layer and a cathode current-collecting layer. The metal-supported solid oxide fuel cell is capable of quickly starting up and withstanding thermal shocks, and also liquefied fuel cartridges are applied as heating and fuel sources for transforming the CO and H2 fuels into electricity via electrochemical reactions.