The present invention provides a tubular thermoelectric generation device, comprising: a plurality of plate-like p-type thermoelectric members each having an external periphery, a through hole, and an internal periphery formed around the through hole; a plurality of plate-like n-type thermoelectric members each having an external periphery, a through hole, and an internal periphery formed around the through hole; a plurality of external electrodes; and a plurality of internal electrodes. Each of the plurality of the external electrodes comprises an internal flange expanded in a direction from the external periphery of the p-type thermoelectric member toward the internal periphery of the p-type thermoelectric member. Each of the plurality of the internal electrodes comprises an external flange expanded in a direction from the internal periphery of the p-type thermoelectric member toward the external periphery of the p-type thermoelectric member.