Sterilized milk preparation method

The invention discloses a sterilized milk preparation method. The method is performed according to the following step sequence: preheating raw milk, directly steam sterilizing, instantly degassing andcooling, homogenizing and filling, wherein raw milk preheating time is 2 to 45 s, a temperature of the preheated raw milk is 35 to 68 DEG C, instant degassing and cooling time is 0.5 to 40 s, and a temperature of the cooled raw milk is 15 to 70 DEG C. According to the sterilized milk preparation method disclosed by the invention, a direct steam sterilizing mode is utilized, sterilizing time is shorter, the denaturation rate of active nutrient substances of milk is low, the heat treatment strength is low, and the milk can be stored under the normal temperature. After the milk is treated by thesterilized milk preparation method disclosed by the invention, a furosine value of the milk is smaller than 12 mg/100 g protein, a beta-lactoglobulin content is larger than or equal to 2000 mg/L, shelf life is larger than or