The utility model discloses a tobacco curing barn heating chamber heat dissipation fume extractor, it includes fires burning furnace, its characterized in that: apron (2) that are equipped with on firing burning furnace outlet flue (1), middle part through -hole department at apron (2) is connected with trapezoidal protruding tobacco pipe (3), upper end fixed mounting in trapezoidal protruding tobacco pipe (3) has " day " font tobacco pipe (4), " mouth " font tobacco pipe (5) more than the one deck from bottom to top concatenates above " day " font tobacco pipe (4), " mouth " font tobacco pipe (5) upper end in the superiors is connected with exhaust pipe connecting piece (6), exhaust pipe connecting piece (6) are connected with exhaust pipe, when the novel assurance of this use has good smoke textraction effect, better radiating effect can have, can reduce the manufacturing cost of enterprise.