Abstract: The corn harvester is an important model in the mechanized production of corn. With the development of the harvester technology,the functions of the corn harvester have been greatly enriched. The advanced corn harvester has many functions,such as harvesting,peeling,straw treatment,grain recovery and so on. In order to further improve the quality of corn harvest,based on the research and application status of the peeling device of corn harvester,the principle and key process of the peeling device are analyzed,the common technical problems of the peeling device applied at this stage are explained,and the suggestions for improving the performance of the peeling device of corn harvester are given.