Abstract: Population dynamics and population structure of parasite wasps on white wax insect were studied by the fixture trapping from 1999 to 2000.Results showed that in Kunming area there were 11 species,and all the species belong to chalcid parasited on Ericerus pela.According to the classification standard,Microterys ericeri,Metaphycus ericeri and Microterys sinicus were defined as the dominant parasite wasps of the white wax insect,occupying 45.9%,37.3%and 11.4% of total species population density respectively.The fluctuation of dominant population was a key factor influencing the complex population fluctuation.A suggestion was given to designate the control strategy about the parasite wasps on the white wax insect.