Abstract: Corn borer is one of the most important pests of maize in Jilin Province and usually causes annual production loss rate above 10%. Since the beginning of 1980's, Jilin Province has explored the biological control technology of corn borer. This paper summarized the key issues in the biological control of corn borer in Jilin Province: occurrence and damage status, the main technologies, experience and benefits of biological control. A research outlook of biological control of corn borer was also suggested. This paper provides insight for pest biological control.