The invention discloses a middle air supply type cyclic edible fungi drying device which comprises an enclosure structure, a drying region, an air processing device and a main air supply pipe arranged on the left side of the enclosure structure. Vertically-arranged air supply non-uniform pore plates and air return non-uniform pore plates divide the space under the air processing device into the main air supply pipe, the drying region and a main air return pipe in the air flow direction, and the air processing device is communicated with the drying region through the main air supply pipe. A group of air supply holes and a group of air return holes are formed in the left side and the right side of each layer of arrangement plates arranged in the drying region. The middle air supply type cyclic edible fungi drying device improves drying air flow distribution through drying-face middle air supply, ensures that air flows at the drying-face position are uniform and stable, drying efficiency is improved, and energy consumption is reduced.