The invention discloses an elastic needle wire packing for air purification and an engineering use method thereof, and relates to mass transfer purification products and technologies in the field of environment friendliness. A plastic elastic wire is alternately stranded on a central rope, elastic needle wire packing monomers in uniform radiation is prepared, and one end or two ends of the packing monomer center rope are fixedly hung on towers, structures or hanging rods in a frame, so that elastic wires are stereoscopically and uniformly spread and filled in an effective area like a forest, the packing is wetted or a water flow is formed by virtue of spray of a spraying device, air blows to the packing forest from any direction, air and liquid can intensively collide and cut on the packing and fully contact to realize high-efficiency mass transfer, particulate matters are washed, soluble matters are absorbed by the liquid, biodegradable organics are dissolved in the absorbing liquid and form biological films on the packing to be degraded, and air is purified. The invention provides widened application of elastic space packing for wastewater treatment, which is just like that a medicine sildenafil for treating cardiovascular diseases is invented by accident to be used for treating male erectil dysfunction.