Abstract: In this paper, through thin - layer drying tests of several corn varieties of Jilin province, the primary and secondary factors affecting thin -layer drying rate are determined and the influential regularity of the different factors is analyzed. It is presented that corn varieties have a not negligible effect on thin-layer drying rate. Thin-layer drying equations of two higher yield corn varieties in Jilin province are built. Conclusions of the study provide a basis for further research on deep-bed drying of corn and furnish a theoretical basis for designing corn drying systems suitable for Chinese conditions.