The cooled wort is pumped into the fermentor through the pipeline. The fermentor is a cylindrical conical container, and the propagation and fermentation of the yeast are realized through pressure control and temperature control. It is used for the brewing of beer with different flavors of different strains and raw materials, the fermentation of wort and the control of yeast biological metabolism in the whole process. In the fermenter, the carbohydrates in the wort interact with the yeast to form alcohol and carbon dioxide. The fermentation cycle is 12 days, 14 days, 21 days, 30 days, 45 days, etc. according to different processes.