The electroantennogram(EAG) was used to investigate the response of Conopomorpha sinensis Bradley to 22 kinds of plant essential oils, 19 kinds of compositions of essential oil and 9 mixtures.The EAG relative value was correlated with the doses range from 0.000 1-5 μL,but increased insignificantly at the doses over 5 μL in the dose-response test of cinnamon oil and citronella oil. At the dose of 5 μL, the maximum EAG relative values tested with cinnamon oil and citronella oil were 101.43 and 100.00 respectively. The EAG relative value tested with citronellal was 75.65, which was the highest in all of the compositions of essential oil. The EAG relative value tested with a mixture of cinnamon and citronellal(1/1,V/V) reached 114.38. Female responded stronger to most of the essential oils and the compositions of essential oils than the male.