Polygonum aviculare L. var.aviculare; flavones; extraction. The factors which effected the extraction of total flavones from Polygonum aviculare L.var.aviculare were discussed with respects to solvent, concentration and the extracting temperature. The rutin was used as a standard compound, the total flavones extracted by the different extracting procedure were quantitated by measurement of absorbance at 510 nm. The results show that 80 ℃ and 35% alcohol are optimal and the extracting rate of the total flavones is as high as 4. 349%.