Abstract: In order to construct green control technology system of corn borer,field trials using chemical pesticide reduction techniques and new Bt biological agents to control corn borer were conducted in Zhaodong and Bin County of Heilongjiang.Based on the analysis of control effect,restore loss rate and yield in the two areas,the results showed that the control effect of the two pesticide reduced by 30% treatments with auxiliary on corn borer was over 84%;The control effect of reduction Cyhalothrin adding auxiliary treatments was slightly higher than routine Cyhalothrin;The restore rate was between 4.6% and 6.5%;The yield was increased8.2%-8.7%.The control effect of chlorantraniliprole was the highest,they were 92.5% and 92.9%;The restore losses rate in Zhaodong and Bin County were 6.8%and 4.8%respectively;The yield was increased by more than 10%.The control effect of Bt was slightly lower than chemical agent,they were over 81%;The restore losses rate were over 4.4% and the yield increase rate were over 5.2%.In conclusion,the reduction application technology of chemical insecticide adding auxiliary and the new Bt agent can effectively control the corn borer.They can be used as the green control technology to control corn borer in production.