The utility model belongs to the technical field of the domestic burners, concretely relates to built -in exhaust smoke tubular heat storage box, built -in exhaust smoke tubular heat storage box, the lid on combustion chamber, combustion chamber and the slag discharge hopper of combustion chamber bottom, the combustion chamber includes inside flame retardant coating and outer cylinder casing, still includes to encircle the peripheral water tank that sets up in combustion chamber, be equipped with the first water inlet, first delivery port and the outlet that are used for to supplying water on the water tank in the water tank, be equipped with two at least exhanst gas outlets on the combustion chamber, still include the exhaust smoke runner unanimous with exhanst gas outlet quantity, the one end of exhaust smoke runner entering flue gas links to each other with the exhanst gas outlet on the combustion chamber, and the one end of exhaust smoke runner discharge flue gas and the smoke discharge hole who sets up on the water tank are connected, and the exhaust smoke runner is located the water tank, draws out water tank after the water heat transfer in exhaust smoke runner and the water tank. The utility model discloses simple structure, waste heat utilization is high.