Abstract: The natural enemy complex of oriental moth, Cnidocampa flavescens (Walker), was reported in this paper. There are 9 species of natural enemies in its population in Jilin Province, which forms a natural enemy net of the moth. Each one of the complex has its own biological characteristics and specified nich. They compete with each other in space and food, among them, Chlorocryptus coreanus Szeligeti is the dominant one, whose parasitic rate is 33.96%~60.51%. The second one is Trichcgramma dendrolimi Mats, whose parasitic rate is 10%~37%. The total parasitic rate of the above-mentioned ones is higher in the forest, where the moth had occurred for many years than the newly occurred area.