[Objective] The aim was to optimize the best technical conditions of extracting total flavone from Pueraria lobata,and studied its antioxidation property.[Method] The total flavone from P.lobata was extracted with ethanol,the factors that influenced the extraction rate of total flavone from P.lobata was studied through orthogonal experiment,and the optimal extracting process parameters were identified.The extract of total flavone from P.lobata was purified by using silica gel column chromatography,and the a...