In order to investigate the effects of total flavone of Ginkgo biloba extraction and the polarity andstructural relationship,and study on the influence on the extraction of polar for total flavone of G. biloba extractionefficiency. Microwave was adopted to extract pueraria flavonids from pueraria lobata with 80% ethanol,80%acetone,80% butanol,three polar of organic solvents. The experimental results indicate that 80% butanol had thebiggest extraction rate in the longitudinal experiment which was agree with ...