Amylase is the hydrolysis of starch and glycogen enzymes, usually through amylase catalytic hydrolysis of starch pulp on the fabric, because of the high efficiency and specificity of amylase, enzyme desizing rate of desizing is high, desizing fast, less pollution, products than acid method, alkali method is softer, and does not damage the fiber.Amylase is mainly used for starch decomposition and improve filtration speed in juice processing and vegetable processing, syrup manufacturing, glucose and other processing manufacturing.