[Objectives] Todetermine the effects of different foods on the feeding, parasitic and other behaviors of parasitoids of the whiteflyBemisia tabaci.[Methods] Different foods, including 15% honey solution, 2-3 instarB. tabacinymphs, and natural water, were provided to three common species of whitefly parasitoidsEretmocerus furuhashii, Encarsia formosaandEncarsia bimaculataand the effects of these different foods on the feeding, parasitic and other behaviors of the three parasitoids was observed and investigated.[Results] Food had an obvious effect on parasitoid behavior. The highest frequencies of feeding, searching and parasitic behavior, and the longest periods of time spent engaged in these behaviors, were recorded in the parasitoids fed on honey solution. Those wasps fed on water exhibited the lowest frequencies and spent the shortest time engaged in these behaviors. Overall trends in these behaviors did not change among the different parasitoid species.[Conclusion] Different foods have significant effects onthe feeding, parasitic, and other behaviors, ofaphelinid papasitoids, and theseeffects may also affect their effectiveness as biological control forB. tabaci