Tremella polysaccharide is known to be structurally unique and biologically active natural products, abundant and versatile in activities and applications in food industry, daily chemical industry and medicine industry. In order to improve the industrialisation of Tremella polysaccharide, the limitations of preparation and structure-activity relationship of Tremella polysaccharide were reviewed in this paper. The research progress of Tremella polysaccharide in the past 20 years was summarized from the sources, preparation methods, molecular structure, activity and application, and the research trend in the future was also prospected. The application prospect of Tremella polysaccharide in against multiple sub-health states was worth expecting.

众所周知，银耳多糖是结构独特且具有生物活性的天然产物，在食品工业、日化工业和医药工业中的活性和应用丰富且用途广泛。为提高银耳多糖的产业化水平，本文综述了银耳多糖的制备局限性及构效关系。从来源、制备方法、分子结构、活性及应用等方面总结了近20年来银耳多糖的研究进展，并对未来的研究趋势进行了展望。银耳多糖在对抗多种亚健康状态的应用前景值得期待。