Abstract: Essential oils were extracted from Zanthoxylum bungeanum Maxum. and Cuminum cyminum L. by steam distillation. The repellect activities of the oils were measured by filter method against stored grain pest Sitophilus oryzae Linnaeus. The results showed that the average repellency within 72 h and 120 h of the oils were 62.4 %，76.5 % and 52.7 %，64.1 %，respectively，the repellecy level was above Ⅲ conformably. And，the chemical components of essential oils were analyzed and determined by gas chromatography-mass spectrumetry. 57 compounds were identified in Z. bungeanum oil，the total content was 98.887 %，including linalool L（ 26.071 %），terpinen- 4-ol（ 14.830 %），α-terpineol（ 12.754 %） and linalyl acetate（ 9.531 %）. 24 compounds were identified in C. cyminum oil，the totoal content was 97.999 %，including cuminal（ 44.057 %），trans-anethole（ 38.691 %）， estragole（ 7.960 %） and γ-terpinene（ 2.799 %）. The results show that the oils had high repellect activities to S. oryzae L. adults. So，the oils have the potential to be developed as new type green pesticide.