The utility model relates to a double-system dedicated biomass gasifier for rural tobacco leaf curing, belonging to device of rural tobacco curing. The biomass gasifier mainly comprises a gasifier body (1), a gas storage chamber (2), oxygen supplying blowers (3,4), a heat pump (5) and a main gas-supplying pipeline (6); the gas storage chamber (2) is arranged between vaporization combustion chambers (7, 8); upper ends of the two vaporization combustion chambers (7,8) are all provided with gas channels (9, 10), and lower ends are provided with gas disks (17,18), ash outlet doors (11,12) and the oxygen supplying blowers (3,4); the top of the gasifier body (1) is provided with two material feeding holes (13,14); the bottom part of the gas storage chamber (2) is provided with a filter layer, the middle part and the lower part are communicated with the vaporization combustion chambers (7, 8) at both sides and are separated from a middle filter plate (15) and an upper filter plate (16); the gas storage chamber (2) is connected with the main gas-supplying pipeline (6) through the heat pump (5). The double-system dedicated biomass gasifier vaporizes biomass to generate combustion gas to replace coal and electricity to supply heat for tobacco leaf curing, has efficacy of easy control of fire size and energy saving.