Flavonoids were extracted from Litsea coreana by saxhlet extraction method.Al(NO3)3-NaNO2-NaOH colorimetric method was applied to determine the total flavonoids by spectrophotometry with rutin as the standard.The linear ranges of the determination were 0.00-0.08 mg/mL and the linear correlation coefficients of the Flavonoids was above 0.999.The recovery ranged from 90.4 % to 93.7% with RSD(n=5) of 2.8 %-4.0 %.This method was suitable for the detection of total flavonoids in Litsea coreana and the content of...