Control method for fermentation temperature in daqu liquor production cellar

The invention relates to a fermentation temperature control method in cellar pools for Daqu liquor production and belongs to the technical field of Daqu liquor production. The fermentation temperature control method realizes the fermentation temperature control inside the Daqu liquor producing cell pool in a heat exchanging way by arranging a heat exchanging device inside a Daqu liquor producing cell pool. When temperature of maternal fermented grains in the cell pool is too low or the temperature rises too slowly, hot water is charged, and heat is fed so as to heat the maternal fermented grains and shorten temperature rise time; when temperature of the maternal fermented grains in the cell pool is too high or the temperature rises too fast, cold water is charged, and heat-removing is carried out so as to cool the maternal fermented grains and reduce temperature rise speed; and in middle and late fermentation stage, waste hot water in workshop production is used for reserving temperature of the maternal fermented grains. The fermentation temperature control method of the cellar pools for Daqu liquor production can raise fermentation speed, shorten fermentation time and improve liquor quality.