The invention discloses a full-automatic screw type capsule drying machine which comprises a box body, a rotating shaft, a drying cylinder installation clamping ring, a discharging plate, a drying cylinder, a spiral guiding plate, a rotating shaft motor, a conveyor belt, a feeding pipe, an air flue expansion board, an electric heating fan, a discharging opening, a connecting rod, an eccentric wheel, a motor, a hinge, a negative pressure fan control device, a filter net, a strong negative pressure fan, a feeding opening, a charging opening, a storage box, a negative pressure fan placement box, an electric heating fan control device, a dust remover and a temperature inductor. The manner that the two ends of the net-shaped drying cylinder are opened and the mesh screw guiding plate is additionally arranged inside the mesh drying cylinder is adopted, so that the capsule drying efficiency is greatly improved, and then the phenomena that due to the fact that heating is uneven, capsule deformation, melting and adhesion are caused and partial capsules are hardened are effectively avoided. According to the full-automatic screw type capsule drying machine, the dust remover is installed on the feeding pipe, so that dust removal is performed on the capsules while the capsules are dried.