5% flavonoids soluble powder from Murraya paniculata is prepared and tested field trials against Lipaphis erysimi. The results shows that 5% flavonoids soluble powder is diluted 400-fold,the control effect is 84.83% , and is the same as azadirachtin. Due to the productive resources of Murraya paniculata, the flavonoids will have broad application space.%从九里香中提取黄酮，制备成5％可溶性粉剂，以菜蚜为供试害虫，进行田间药效试验。结果表明：5％九里香黄酮可溶性粉剂稀释400倍的防效为84.83％，与对照药剂印楝素的效果相当。由于九里香资源丰富，该黄酮将有广阔的应用空间。
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