The pasteuriser consists of plate heat exchanger, balance tank, pump, hot water circulation system (including: mixer of steam and water, hot water pump, steam adjusting valve and water level control, etc) and computer system for pasteurisation program, CIP program, temperature control, this is used in heating and cooling raw material. The pasteuriser is usually used in the processes of milk, ice-cream, milk powder, fruit juice, beverage, etc which is sensitive to heat. The material is pumped to the plate heat exchanger, then been preheating, holding, heat energy recover, cooling and all this can keep the products original physical nature and taste.