[目的]研究香椿提取物对玉米象的驱避活性和触杀活性。[方法]选用95%乙醇、石油醚和二氯甲烷分别萃取香椿树叶和树皮的活性成分,配制成0.60、0.30、0.15g/ml3种浓度对玉米象进行室内生物活性研究。[结果]香椿叶石油醚提取物对玉米象具有较强的驱避作用,香椿的3种溶剂提取物对玉米象没有明显的触杀活性。[结论]香椿石油醚提取液对玉米象具有一定的驱避活性。 [Objective] The research aimed to study the repellent activity and contact activity of Toona sinensis extract on corn. [Method] The active components of the leaves and bark of Toona sinensis were extracted by 95% ethanol, petroleum ether and dichloromethane respectively to study the biological activity of the corn in three concentrations of 0.60,0.30,0.15g / ml. [Result] The petroleum ether extract of Toona sinensis leaves had a strong repellent effect on maize elephant, and the three kinds of solvent extracts of Toona sinensis had no obvious contact activity on maize elephant. [Conclusion] The petroleum ether extract of Toona sinensis possesses repellent activity to corn.