The invention discloses a drying device special for medicines. An air blower and a heating plate are arranged in a drying barrel, a ventilation hole is formed in the heating plate, the ventilation hole penetrates the whole heating plate, a rotating barrel is further arranged in the drying barrel, meshes are evenly distributed in the rotating barrel, the rotating barrel is further connected with a motor through a rotating shaft, a barrel cover is arranged on the upper portion of the drying barrel and is further communicated with an air outlet cylinder, and the other end of the air outlet cylinder is connected with a vortex generator; the vortex generator is further connected with a high-temperature steam pipeline and a low-temperature steam pipeline, and the high-temperature steam pipeline is connected with the bottom of the drying barrel to form a loop, the low-temperature steam pipeline is connected with a condensation pipe, and a water treatment device is arranged on the lower portion of the condensation pipe. The drying device special for the medicines is simple in structure and high in drying speed, exhausted gas in the drying process is circularly utilized after being treated, the environment is not polluted while energy is saved, and practicability is high.