The repelling and controlling effect of alcohol extracts from 8 common plant species on 3 major vegetable aphids (Myzus persicae, Aphis gossypii and Lipaphis erysimi) were studied in the laboratory, and the effect on their parasite it was also studied. The results showed that the test 8 plant species had some effects on 3 aphids. The plant alcohol extracts from Tephrosia vogelli and Cinnamomum camphora had the mast effect. The deterrent rate on Myzus persicae, Aphis gossypii and Lipaphis erysimi was 0.414, 0. 729, 0. 547 and 0. 549, 0. 690, 0.729, respectively. These 2 plants had the most controlling effect on 3 aphids, too. The alcohol extract of Cinnamomum camphora was safely for parasitoids (Aphidius gifuensis and Diaeretiella rapae). BR Animals and man. Control. Parasites diseases and disorders. Parasites. Insect parasites. Hosts. Insect hosts. Abiotic factors. Chemical factors. Aphidius gifuensis (Aphidiidae): Parasite; Diaretiella rapae (Braconidae): Parasite; Aphis gossypii (Aphidoidea): Host; Lipaphis erysimi (Aphidoidea): Host; Myzus persicae (Aphidoidea): Host. Aphidius gifuensis, Diaretiella rapae: Hemipteran hosts, Aphis, Lipaphis and Myzus, Plant alcohol extracts effect on parasites, Fertilizers and pesticides, Plant alcohol extracts; Aphis gossypii, Lipaphis erysimi, Myzus persicae: Chemical control, Plant alcohol extracts, Hymenopteran parasites, Aphidius and Diaretiella, Plant alcohol extracts effect on parasites, Fertilizers and pesticides. ST Insecta, Hymenoptera, Apocrita, Terebrantia, Ichneumonoidea, Aphidiidae; Insecta, Hymenoptera, Apocrita, Terebrantia, Ichneumonoidea, Braconidae; Insecta, Hemiptera, Homoptera, Sternorrhyncha, Aphidoidea. Arthropods; Hymenopterans; Insects; Invertebrates; True Bugs. none