Abstract: Effect of rice moth (Corcyra cephalonica) eggs, Trichogramma pupae developed in perny silkworm (Antheraea pernyi) eggs and green peach aphids (Myzus persicae) on the development and oviposition ability of Harmonia axyridis and Propylaea japonica were studied. Results of rearing ladybeetles with same kind of diet during their whole development period (larval and adult stage) showed that, larvae of both H. axyridis and P. japonicadied in early larval instars when fed on rice moth eggs. Adult yield rate was 65.2%-84.6% when larvae fed on Trichogramma pupa or peach aphid diet and no difference in sex ratio was observed. But both larval and pupal durations of ladybeetles were significantly longer than those fed on peach aphid and body weight of the newly emerged female adults was significantly lowered. Oviposition ability of P. japonica was significantly influenced when different diets were used during their larval and adult stages. Female P. japonica could not lay eggs when larval stage fed on Trichogramma pupae and adult stage on Trichogrammapupae or rice moth eggs, or larval stage on peach aphids and adult on Trichogramma pupae or rice moth eggs. Larval stage fed on Trichogramma pupae and adult stage on peach aphid could lay 221 eggs per female. Female beetles fed on peach aphid both in larval and adult stages laid significantly more eggs (404 eggs per female). It can be concluded that rice moth egg is not suitable for both H. axyridis and P. japonica rearing, green peach aphid is the best choice as diet for mass rearing these ladybeetles. And Trichogramma pupa developed in perny silkworm can be used as supplementary artificial diet for rearing larval stage of the ladybeetle when aphid supply is not sufficient.