Abstract: A biomass pyrolysis furnace comprises a furnace shell (23), a furnace container (6), an exhaust pipe (3), a smoke pipe (18), a recovery tower (11), and an intake pipe (7), wherein the smoke pipe (18) is installed on the furnace shell (23); the furnace container (6) is installed in the furnace shell (23); the bottom of the furnace container (6) and the periphery thereof are provided with a plurality of mesh holes; an exhaust gap (24) is provided between the furnace container (6) and the inner wall of the furnace shell (23); the smoke pipe (18) is connected to the furnace shell (23) at one end thereof, and to the recovery tower (11) at the other end thereof. The furnace shell (23) is provided, on one side at the upper end, with a flue hole and an intake pipe (7), and the exhaust pipe (3) is provided on the opposite side of the furnace shell (23).