Abstract:Wuyi Rougui tea with different grades were used as the research materials，and contents of six quality indexes and phenol-ammonra ratio was calculated.Results showed that Rougui with high grade contained the high contents of quality indexes.For tea polyphenol，there were significant differences between the three grade.Catechin content exist significant differences between the first grade and third grade.There were significant differences in soluble sugar content between the first and the third grade，the second and the third grade.Linear analysis found that grades were positively correlated with six quality indexes，among which R2of tea polyphenols reached 0.64.The correlation analysis showed that except for caffeine，the other indexes were significantly positively correlated with the evaluation score（grade），most of which showed significant or extremely significant positive correlation.In brief，contents of tea polyphenols，catechins and soluble sugar can be used as the representative quality indexes of Wuyi Rougui tea，especially the content of tea polyphenols was the most representative.