A weaving workshop air circulation device comprises a hot air inlet pipe arranged at one end of a weaving workshop, and an exhaust guiding plate is arranged at the other end of the weaving workshop, is provided with conical ventilation holes, and divides the weaving workshop into a production workshop body and a hot air purification and circulation room. Metal gauzes are arranged on the side, close to the exhaust guiding plate, of the hot air purification and circulation room. Hooks used for removing impurities of fibers and the like intercepted on the metal gauzes and a driving mechanism used for driving the hooks to reciprocate relative to the metal gauzes are further arranged on the portion, located on the air outlet sides of the metal gauzes, in the hot air purification and circulation room, wherein the driving mechanism is connected with the hooks through connecting rods. An air outlet of the hot air purification and circulation room communicates with a circulation fan through a circulation air pipe, and the other end of the circulation fan communicates with the hot air inlet pipe or an air return pipe. The weaving workshop air circulation device is simple in structure, hot air in the weaving workshop can be effectively recycled, the specific hooks are adopted, cleaning of the metal gauzes is facilitated, and the cost of hot air recycle is lowered.