Abstract: It is necessary to establish the analysis models of corn ears to analyze corn threshing process using DEM (the Discrete Element Method). According to the shapes and the structure of corn ears, a method for establishing analysis models of corn ears based on particles agglomerate was proposed and the corn ears modeling software was developed, which was added to the corn threshing simulation software developed by our group. By comparing the corn ears’ entities with the analysis models and the simulation analysis of corn threshing process, the feasibility of the new method was validated. This paper provides reference for analyzing corn threshing process used by DEM.