The invention discloses a pueraria lobata particle drying device which comprises a drying room. Cement plates are placed on the ground and the periphery of the drying room. The pueraria lobata particle drying device further comprises an exhaust mechanism, multiple drying frames, multiple drying screens and a heating mechanism. The exhaust mechanism is arranged on the top of the drying room. The multiple drying frames are arranged in the drying room. Multiple partition layers are formed by the drying frames through multiple steel wire meshes. The multiple drying screens are sequentially placed on the steel wire meshes in the partition layers. The heating mechanism is arranged on the outer side of the drying room, and the heating mechanism is connected with an adjusting filtering mechanism. The adjusting filtering mechanism is connected with the interior of the drying room through multiple heat transmission pipes. By means of the pueraria lobata particle drying device, even distribution and adjustment control of hot air in the drying room are achieved, the problem that the environment is polluted due to traditional firewood heating is solved, biological energy sources are adopted so that more energy is saved and environment friendliness is better achieved, in addition, the drying efficiency of pueraria lobata particles is high, and the effect is good. Furthermore, the pueraria lobata particle drying device is compact in structure, easy to operate, safe, reliable, high in heating speed and capable of being used for drying work of large batches of pueraria lobata particles.