Grain biological enzyme hydrolysis technology refers to the use of biological enzyme preparation (such as amylase, such as amylase, etc.) with the characteristics of high efficiency, specificity and mild conditions, which are targeted to the starch in grain and convert it into dextrin, oligosaccharide or glucose, so as to increase the solubility, stability and yield of grain. The better taste and digestion and absorption characteristics of the products greatly enhance the application area and added value of grain.