Abstract: A combustor which can be manufactured without requiring large-scale equipment and with a small number of processes and has a cooling fluid flow path sealed with high reliability. The combustor includes an inner cylinder made of metal constituting a combustion chamber, a cooling fluid flow path formed on an outer surface of the inner cylinder, and a sealing layer covering the outer surface of the inner cylinder to seal the cooling fluid flow path. The sealing layer is constituted by a bonded body of metal wires wound around the outer surface of the inner cylinder and metallurgically bonded to each other, and the sealing layer is bonded to the outer surface of the inner cylinder by metallurgical bonding.