PROBLEM TO BE SOLVED: To provide a novel fermented tea leaf production method capable of producing homogeneous fermented tea leaves efficiently on an industrial scale.SOLUTION: A method of producing fermented tea leaves at least comprises: a hot wind treatment process in which fresh tea leaves are treated with hot wind so that the tea leaves are adjusted to have a temperature of 15-40°C and a moisture content of 200-360% on a dry basis; and a coarse kneading process in which the tea leaves after the hot wind treatment process are kneaded while hit and pressed at a temperature kept suitable for fermentation of the tea leaves.SELECTED DRAWING: None