The invention discloses a flue-cured tobacco fertilization device, aiming at solving the problem that an existing tool cannot realize double furrow application and uniform application of a base fertilizer. The flue-cured tobacco fertilization device comprises a rack, wherein a fertilizer storage box is fixed above the rack; a fertilizer outlet is formed in the bottom of the fertilizer storage box; a fertilization mechanism is fixed under the rack; a front walking wheel and a rear walking wheel are arranged at the front and back ends of the rack respectively; the fertilization mechanism comprises two fertilization discharging pipes which are symmetrically arranged from left to right; a flow control mechanism is arranged at the fertilizer outlet; the flow control mechanism comprises a rotary shaft and two fertilization conveying pipes; the rotary shaft transversely stretches into the bottom of the fertilizer outlet; one end of each of the two fertilization conveying pipes extends to the fertilizer outlet; the other ends of the two fertilization conveying pipes are correspondingly communicated with the two fertilization discharging pipes respectively; meanwhile, the two fertilization conveying pipes are internally provided with spiral conveying rods respectively; the outer end of the rotary shaft is in transmission connection with a wheel shaft of the front walking wheel through a chain; and the inner end of the rotary shaft and the spiral conveying rods are matched to rotate through a planetary gear, and fertilizer outlets of the fertilization conveying pipes are not lower than fertilizer inlets.