The pasteurization machine is a beer pasteurization equipment manufactured with imported foreign technology. It uses efficient plate heat exchangers to achieve heat exchange between beer and hot water, instantly heating the beer to its pasteurization temperature, and then passing through a constant temperature sterilization before being cooled to its original temperature by a refrigerant medium. Through the process of instant heating, insulation, and cooling, beer is pasteurized to a sterilization value of 25pu, while maintaining the CO2 content and taste of the beer unchanged. This equipment is suitable for use in conjunction with beer filling and sterilization after yeast beer recycling.