According to one embodiment, a direct methanol fuel cell includes an anode to which an aqueous methanol solution is supplied as the fuel, a cathode to which oxidizing gas is supplied, an electrolyte membrane interposed between the anode and the cathode, a first separator disposed on the surface of the anode on the side opposite to the electrolyte membrane side and a second separator disposed on the surface of the cathode on the side opposite to the electrolyte membrane side, wherein the first and second separators are respectively made of a membrane containing a copolymer of a first vinyl monomer having a cyclic functional group bonded with a carbonyl group, a second vinyl monomer having a carboxyl group and a third vinyl monomer having an aromatic group, and a carbon powder dispersed in the copolymer.