Enzyme preparation (from biological Preparations helicase) (including the animals and plants, microbial extract) with the material, biological catalysis ability with other ingredients used in food processing speed, and improve the quality of products, food products as Enzyme preparation. Enzymatic synthesis of plasma cells are creatures of high catalytic activity, because the protein from biology, so usually called “biological catalyst”. Because of the high efficiency, enzyme catalysis with specificity and etc, so mild conditions and get attention, is widely used in food processing, improve product quality, reduce cost, saving material and energy, environmental protection etc produced great economic benefits and social benefit. Using the method of microbial ferment produce enzyme preparation is far superior to the extracted plant organs and follower of enzyme preparation, has become the main source of enzyme preparation industry. With the enzyme preparation applications in food ferment industry, the sales of enzyme preparation has more than 1.3 billion dollars. Our production enterprises have enzyme preparation almost 200, 1994, enzyme preparation for 15 million t production. The main production of enzyme preparation and varieties of this chapter. Although enzyme preparation from creatures, but usually use not tasted, products of the enzymes related components (including enzyme production of some creatures such as microorganism metabolites, or even harmful substances) may have used as food intake, thus influence by human health, therefore, must include production of enzyme preparation of enzyme preparation for safety assessment strains. In 1972, the FAO/WHO expert committee of food additives in Geneva was made about “food additive hygiene requirements. China’s industrial association and national fermented food industrial standardization technical committee industrial fermentation standardization branch September 1992 also puts forward the food industry enzyme health management method “(see appendix 8), regulating the enzyme in industrial hygiene management, promote the improvement of the quality of enzyme preparation. China has been industrialized production of enzyme preparation for the food industry. Alpha amylase, high-temperature alpha, beta amylase amylase, amylase, saccharifying enzyme, glucose, pectic enzymes, heterogeneous enzyme modified protease, bacteria neutral protease, beta glucan enzyme, papain, pineapple proteinase, etc.