通过近5年的研究，得到一条能够一次性从茶叶中提取茶多糖、茶多酚和咖啡碱等多种有效成分的综合提取工艺路线。应用该工艺能提取1．5％左右的咖啡碱、4．0％左右的茶多酚和2．5％左右的茶多糖，其得率同各成分单独提取量差异不大，但质量优于单独提取。该工艺还具有减少原料及试剂消耗，节省能源，降低成本，简便易行的特点。 Through the past 5 years of research, we have obtained a comprehensive extraction process that can extract various active ingredients such as tea polysaccharides, tea polyphenols and caffeine from tea leaves at one time. The process can be used to extract about 1.5% of caffeine, about 4.0% of tea polyphenols and about 2.5% of tea polysaccharides, the yield of which is the same as that of individual components, but the quality is better than extract. The process also has the characteristics of reducing the consumption of raw materials and reagents, saving energy, reducing costs, and being simple and easy.