High fructose corn syrup (HFCS) is an important natural sweetener. Its function and economy make it an ideal substitute for granulated sugar. Fructose syrup in production process, the temperature, viscosity, density, etc., accuracy, strength, filter efficiency of filter materials and reuse have higher requirements, The products and impurities in syrup production are varied,The whole filtration process involves clarification and protection filtration, removal of insoluble proteins, mechanical impurities, capture of activated carbon and final sterilization, etc