By using the crude catechin products produced by organic solvent extraction as raw material, the feasibility of preparing the high content catechins (content≥95%) with macroporous adsorption resin by column chromatography was studied. 12 kinds of resins were chosed as adsorbents, and the variations of catechins content and components during the process of static and dynamic adsorption were systematically tested by HPLC. Results showed that by using decaffeinated small leaf variety catechins as raw material, when a certain fraction collected th...