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The main active components of the Camellia sect. Chrysantha flowers were analyzed and the antioxidant activity of total flavonoids were compared. The results showed that among the flowers of the 10 species of Sect. Chrysantha plants, C. nitidissima had the highest contents of TFC (0.848 g/100 g) and TSC (6.824 g/100 g), and C. insularis had the highest content of TPOC (4.3 g/100 g). The TPC (17.188 g/100 g) and CTC (101.026 mg/100 g) of C. achrysantha was significantly higher than that of the other 9 species. C. pubipetala had the highest content of GAC (1.586 g/100 g), and the amino acids of C. tunghinensis had the highest amino acid content of all the 10 species. Comprehensive evaluation of the active components of Camellia sect. Chrysantha flowers, it rankings were: C. achrysantha > C.insularis > C. pubipetala> C. quinqueloculosa >C. tunghinensis > C. impressinervis> C. longzhouensis > C. perpetua > C. nitidissima >C. micrantha. This indicated that the combined value of the seven active ingredients was the highest in the flowers of C. achrysantha, followed by C. insularis in Vietnam and C. pubipetala. The results provide reference for the development and utilization of new plant food resources of Sect. Chrysantha. [ABSTRACT FROM AUTHOR]