Abstract  [Objectives]  To investigate the effects of volatiles of rice plants fed by insect pests. [Methods]  The volatile compounds induced by the feeding of Nilaparvata lugens and Chilo suppressalis were isolated and identified by dynamic headspace adsorption and Gas Chromatography-Mass Spectrometer. [Results]  Under the experimental conditions, a total of 43 kinds of volatiles were isolated and identified from rice plant. After fed by insect pests, the types of volatiles in rice were not different from those in healthy rice, but the relative contents of some volatiles changed significantly. The relative contents of 3 kinds of volatiles were significantly different among rice fed by N. lugens at different time, while the relative contents of 6 kinds of volatiles were significantly different among rice fed by C. suppressalis at different time. The duration of feeding had a significant effect on volatiles in rice plants. [Conclusion]  The feeding of insect pests has a significant effect on volatiles in rice plants, and induction and variation of VOCs in rice plants are related to the species of insects and their duration of feeding.