Abstract: Corn grain drying not only required high productivity， but also guaranteed the quality of the dry ear. Consequently， we designed 5HZL1200 type maize ear vertical drying system， the control part of which was corn grain drying monitoring system developed on the Kingview. The problems of low efficiency of seeds drying， artificial error etc. have been overcome. The experimental results of using the vertical drying system for corn grain drying experiment showed that adopting vertical type of drying made its drying time 21 h shorter than that of flat drying; moreover， the precipitation rate was increased on average by 428%， and corn grain crushing rate was reduced by 22%. The system had been proved to have a series of characteristics， including high thermal efficiency， small occupied area， good drying quality， low unit cost， high automation， etc.

Key words: maize ear, vertical drying system, Kingview, design