Abstract: In this paper listed are a total of 11 Classes, 22 orders, 89 Families, 327 species of protoparasites and predators against vegetable pests in Beijing, in which 45 varieties and forms, and a total of 10 Families, 23 species of epiparasites as well as 246 species of hosts records are included.The species of protoparasites, predators and pathogens on hosts are as follows:Pieris rapae (=Artogia rapae) (Lep. pielidae) 16, 50 and 3, total 69species.Plutella xylostella (Lep. plutellidae) 11, 22, total 33 species.Barathra brassicae (=Mamestra brassicae) (Lep. Noctuidae) 8, 35, total 43 species.plusia agnata (Lep. Noctuidae) 11, 34, total 45 species.Myzus persicae, Lipaphis erysimi, Brevicoryne brassicae et al. (Homop-tera. APhididae) 7, 59 and 1, total 67 species.Trialeurodes vaporariorum (Homptera. Aleyrodidae) 4, 28 and 2, total 34 species.Heliothis armigera (Lep. Noctuidae) 9, 23, total 32 species.Heliothis assulta (Lep. Noctuidae) 3, 16, total 19 species.Agrotis ypsilon (Lep. Noctuidae) 11, 6, total 17 species.

Key words: Natural enemy, parasite, predator, vegetable insect pests