Abstract: To explicit the role of volatiles in excluding Myzus persicae, the effects of nine plant odour sources volatiles with both coriander volatile odor and control on choice response of M. persicae was tested in detail with a Ytube olfactometer in laboratory. The result showed that coriander volatile odor excluded M. persicae whether winged or not, celery odor excluded wingless M. persicae (P＜0.05), pepper odor excluded winged M. persicae (P＜0.01). Compare with coriander volatile odor, beans and rapeseed volatile odor had significant attraction to M. persicae whether winged or not (P＜0.01). Cabbage, cucumber, celery, eggplant, tomatoes odor attracted winged M. persicae (P＜0.05), garden chrysanthemum had no obvious response.