The invention provides a processing method of congou black tea. The method comprises the steps of material selection, hot air withering, constant temperature rolling, intelligent controlled fermentation, shaping, primary drying, screening, secondary drying, baking, fragrance extraction, screening, cutting, fragrance extraction, screening, classification and packaging. The method adopts late spring and early summer one-sprout and two or three-leaf green, a constant temperature rolling, intelligent control fermentation, baking, fragrance extraction, optimization, striping and fragrance extraction technique and a standardized precise classification technique, so that 40-50% of energy consumption can be reduced effectively; the yield is increased; the prepared congou black tea is striped, tight and straight in appearance, consistent, even and orderly in length, sweet and thick in fragrance, red and bright in soup, thick and mellow in taste, tender, uniform, red and bright in leaf base, excellent in interior quality, and relatively clear; a safety control index reaches an export standard; the quality reaches the standard; and the method has a good economic benefit.