The utility model provides a vertical multi-section drying machine which comprises a feeding bin, a drying barrel and a discharging hopper. The drying barrel consists of multiple sections and comprises an air outlet section, a universal section and an air inlet section, wherein the air inlet section is arranged under the air outlet section, one or more universal sections are arranged between the air inlet section and the air outlet section, and adjacent sections are fixedly connected through flanges. The vertical multi-section drying machine is based on the universal section, the air inlet section and the air outlet section are formed on an opening in the side wall of the universal section, and the air inlet section, the air outlet section and the universal section are combined and installed for form drying machines different in structural size so as to meet the differentiated production requirement of the drying machines.