The utility model discloses a lane spray dust prevention device. The lane spray dust prevention device comprises a dust filter gauze and a purifying water curtain device, wherein dust filter gauze is arranged in a lane and is used for filtering dust in the lane; the purifying water curtain device is arranged on the top surface of the lane and is used for spraying the dust filter gauze; the dust filter gauze is arranged close to the purifying water curtain device and is positioned at a windward position; the periphery of the dust filter gauze is connected with the four walls of the lane respectively. The lane spray dust prevention device has the advantages of good application effect on dust prevention in the lane, simple structure, low cost and recyclability.