Abstract: Corn is an important crop for grain, feed and industry. With the rapid development of bioenergy, stockbreeding and biopharmaceutical industries, the demand for corn in our country is increasing. Along with the acceleration of urbanization, rural labor force has been decreasing, which resulted in extensive field management and years of continuous cropping, and then the amount of corn insect pest appeared in an upward trend, the pesticides dosage was aggravated, and the yield and quality of maize was declined. In order to alleviate the corn pest and reduce pesticides dosage, this paper sum up the main types and hazards of corn pest, as well as the prevented measures and their advantages and disadvantages; it also presented an overview of screening and identification of domestic corn insect resistance, the research progress of corn insect-resistant genes and transgenic insect-resistant maize, which laid the theoretical foundation for China''s insect-resistant maize genetic breeding.