【摘要】：[Objective] To establish a content detection method for the total flavonoids in Melastom adodecandnun Lour. [Methods]Content of total flavonoids in M. adodecandnun was detected by UV-Vis spectrophotometry. [Results]When the content of total flavonoids in M. adodecandnun was detected by UV-Vis spectrophotometry,there was good linear relationship(r = 0. 999 6) within the range of 0. 004 16- 0. 066 59mg/mL. The average recovery rate was 98. 85% and RSD was 2. 75%. [Conclusions]This method was accurate,simple and could be used for the content detection of total flavonoids in M. adodecandnun.