Technical feasibility about the preservation of Antheraea pernyi′s eggs, which are used as middle hosts of Trichogramma dendrolimi Matsumura, irradiated by electron beam is studied in this paper. The effects of radiation dose, storage temperature on preservative time of eggs are discussed. The results reveal that the preservative time of Antheraea pernyi's eggs irradiated by electron beam, combining with storage in a refrigerator, is notably prolonged in contrast with the control. When the irradiated eggs stored in a refrigerator for 89 days are serviced as hosts, the parasitic percentage for Trichogramma dendrolimi Matsumura is about 80%. Besides, the emergence percentage, average numbers of parasitoids reproduced out of one egg, as well as body size, growing stage periods, and the sexual rate of descendant are all normal. Irradiated eggs have not any adverse effects on the abilities of Trichogramma species and their offspring in both bearing and controlling insect pests.