近年来,随着水产养殖规模的不断扩大和养殖密度的增加,养殖环境污染日趋严重,生态环境遭到破坏,养殖病害频发。各种化学药物的大量使用,不仅使病原微生物产生了抗药性,并导致了水产养殖动物免疫功能的降低,而且养殖水体的药物残留也直接威胁着人类的健康。微生态制剂在科学研究和生产应用中则体现出了明显的改善和调节养殖水体环境、维持生态平衡、提高水产动物抗病能力和减少死亡的作用,并 In recent years, with the continuous expansion of aquaculture scale and the increase of breeding density, the environmental pollution of aquaculture is worsening day by day, the ecological environment is destroyed and breeding diseases are frequent. The extensive use of various chemical drugs not only makes the pathogenic microorganisms resistant, but also leads to the decrease of immune function of aquaculture animals, and the drug residue in aquaculture water also directly threatens human health. In the scientific research and production applications, the probiotics have obviously improved and regulated the aquaculture water environment, maintained the ecological balance, improved the anti-disease ability and reduced the mortality of the aquatic animals.