Fuente: WIPO "tobacco agriculture" The invention relates to a tobacco leaf positioning method and belongs to the technical field of tobacco agricultural production. The method comprises the following step: after sealing the top of a tobacco plant or before harvesting the middle leaf, stapling stitching needles into the root of the main vein of each chosen leaf by using a stapler according to a sampling demand, wherein the stitching needles can be quickly and firmly fixed on the leaves, are prevented from dropping off during the farming operations such as harvesting, coding rods, and the like, and have no influence on the quality of tobacco. The method provided by the invention is simple, the fund and labor force investments are less, and the method can be applied to the tobacco test sampling for any part.