A fuel adsorption device may include a case and a heater. The case may be metal and may have a multi-cylindrical shape. The case may accommodate a plurality of adsorbents configured to at least one of adsorb and desorb evaporated fuel. The case may include a cylindrical first wall part, at least one cylindrical second wall part disposed further inward than the first wall part, and a plurality of connection parts connecting the first wall part and the at least one second wall part to one other. A first adsorbent of the plurality of adsorbents may be arranged in a first space disposed between the first wall part and the second wall part. A second adsorbent of the plurality of adsorbents may be arranged in a second space disposed further inward than the second wall part. The heater may be disposed on an outer surface of the first wall part.