Abstract: This paper dealt with the effects of honey, corn pollen, soybean flower, and honeydews excreted by Nila-paruatae lugens and Toya spp.on the longevity and parasitic ability of A.nilaparvatae.The results showed that the longevity of A.nilaparvatae was obviously extended, and its egg production on N.Lugens was significantly increased when fed with those nutrient-rich diets except the honeydew excreted by Toya spp.Corn pollen and the honeydew excreted by N.lugens worked only in the forms of pollen (water and honeydew) water.The longevity of N.lugens was not affected by its parasitic behaviors, but its survival rate was higher within 40～48 hours, and then decreased rapidly.About ten species of plant hopper, the host of Anagrus spp., were found in non-rice habitats, which provided shelter and afforded foods to the parasitoids of rice pests, and contributed to protecting the natural enemies and enhancing the biological control in the rice system.