The invention relates to a flue-cured tobacco adjustment and preparation device. The device includes a box, an inspection window and a microcomputer automatic-control instrument which are arranged onone side of the external of the box, and an electric relay box connected with the microcomputer automatic-control instrument through wires; tobacco leaves woven to be a rod are hung to a tobacco hanging beam, a tobacco loading door is closed for heating, and photo-thermal film is adopted to heat; the photo-thermal film is fixed on a first heater frame and a second heater frame, air heated by heating film in an oven rises, and under auxiliary driving of a circulating fan, the hot air fast penetrates through a tobacco layer to reach the top of the oven, enters space where the circulating fan isinstalled from an air returning inlet, flows to the bottom of the heating film through the air returning inlet after passing through the circulating fan, and then rises to complete a round of cycle. The product is reasonable in design and simple to operate, a bulk curing barn curing mode is simulated, electric heating is adopted to conduct curing, after being used, the device can accurately implement a bulk curing technology, and especially for variety curing and other small-area curing, the experimental effect is very good.