colorimetric method for the determination of flavones in hawthron through systematic research was described. Extracted by ethanol and purified by polycaprolactam, flavones produced colour with aluminium nitrate that was quantitated by measurement of the absorbance at 510nm. Tlie rutin was used as a standard compound.The lowest limit of determination was 0. 12%.The precision(RSD%)was 0. 028~0.24.The recovery was 1 02. 0±7. 1%. Determination results showed satisfactory agreement with the other method.