Black tea manufacturing method

The invention relates to the technical field of tea processing, and specifically relates to a black tea manufacturing method. The manufacturing method comprises following steps: naturally withering fresh tea leaves for 6 to 15 hours in a room with a relative humidity of 60-80% at a temperature of 24 to 25 DEG C; after tea stalks and leaves become soft, the grass smell disappears, and light fragrance is generated, paving the tea leaves, drying the tea leaves in the sun for 10 to 20 minutes, starting to roll tea leaves when the tea leaves are still warm; rolling the tea leaves for 60 to 90 minutes until the strips of tea leaves are uniform and neat and the strip forming rate is 80% or more; after the tea gives off light fragrance, and carrying out fermentation at a fermentation chamber witha humidity of 90% or more at a temperature of 25 DEG C. In fermentation, the thickness of paved tea is not more than 10 cm, the fermentation temperature is not higher than 28 DEG C; after fermentation, the spicy grass smell d