Catechins compounds are important bioactive substances in tea, content of about 70% of the total tea polyphenols. They are important materials which affect the color and taste of tea, so the research on its method of detection is of great significance, by which we can identify the quality of Pu'er tea and study the tea flavor mechanism. We established a rapid and accurate method of analyzing and determination of catechins by high performance liquid chromatography when we explored the Pu'er tea samples pre-d...