The invention discloses a flue-cured tobacco scientific baking method based on transplanting period-fertilization amount and rainfall. The scientific flue-cured tobacco baking method comprises the following steps that: the transplanting period x1, the fertilizing amount x2 and the field growth period rainfall x3 of a tobacco planting land in the same year are collected; the historical average tobacco transplanting period z1, the historical average fertilizing amount z2 and the historical average rainfall z3 are calculated; the acquired and calculated data are substituted into a baking processcorrection model, and a wet bulb temperature correction value Y1 and a baking time correction value Y2 of the baking process are calculated; parameters corresponding to the flue-cured tobacco curing process are adjusted according to the correction value. According to the influence rule of flue-cured tobacco key agronomic measures and climate factors on the quality of fresh tobacco leaves, in combination with the baking characteristics of different flue-cured tobacco varieties, a baking process correction model is established and substituted to obtain a baking wet bulb temperature and a bakingtime correction value. The baking process is adjusted according to the correction values, so that the baking process can be rapidly, scientifically and accurately corrected. The quality of baked tobacco leaves is improved. The baking loss rate is reduced, and the income of tobacco growers is increased.