Fuente: WIPO "tobacco agriculture" The invention discloses a flue-cured tobacco maturity judging method based on observation and statistical analysis of fresh tobacco leaf slices, and belongs to the technical field of tobacco leaf maturity detection. The flue-cured tobacco maturity judging method comprises the following steps: performing fresh tobacco leaf collection and primary judgment, performing fresh tobacco leaf slice production, performing slice observation and performing secondary determination. By the flue-cured tobacco maturity judging method, a quantizable maturity index can be effectively provided for a flue-cured tobacco variety, so that the guarantee of harvesting of tobacco leaves at proper maturity is facilitated, without harvesting under-mature or over-mature tobacco leaves, and the quality of the tobacco leaves after curing is guaranteed, the availability of the tobacco industry is improved and the income of tobacco farmers is increased.