In juice with or without pulp, juice concentrate, syrup, tea, soy milk, carbonated or non-carbonated beverages, the plate heat exchanger is used for heating, cooling, sterilization, ultra-high temperature instant sterilization and heat recovery. Plate heat exchanger can strictly ensure the quality of the product, for hot or cold bottles of low heat sterilization and heat treatment can save more energy, the heat recovery rate is very high. In the dairy beverage industry, it can be applied to heating, sterilization and cooling of fresh milk or dairy products, which can inhibit the reproduction of microorganisms in dairy products, keep the freshness of drinks and ensure that dairy products do not deteriorate.