The invention discloses a leech drying machine, and relates to the technical field of leech producing and processing. The leech drying machine comprises a drying frame controlled by a controller. Thedrying frame comprises a base communicating with a heat source and a hollow pipe arranged at the middle portion of the base. The base is composed of an inner ring side wall, an outer ring side wall, afirst bottom plate and a second bottom plate, wherein the first bottom plate and the second bottom plate are arranged at the bottom of the inner ring side wall and the bottom of the outer ring side wall correspondingly. A top plate is arranged on the top face between the inner ring side wall and the outer ring side wall, and the base is a cavity concaved inwards. The bottom of the hollow pipe downwards penetrates the first bottom plate and communicates with a cavity of the base. A plurality of cross rods perpendicular to the axis of the hollow pipe are arranged on the outer wall of the pipe wall of the hollow pipe. The cross rods are provided with a plurality of hooks. The hollow pipe and the inner ring side wall are provided with a plurality of through holes. Compared with the prior art,the problems that when existing leeches are manufactured into dried products, efficiency is low, and the drying degree cannot be unified can be solved.