Abstract: The present invention relates to an asphalt reinforcement comprising an air-permeable polyethylene film, and more particularly, to an asphalt reinforcement comprising an air-permeable polyethylene film prepared by adding an inorganic material to a composition comprising polyethylenes having different properties. The asphalt reinforcement comprising the air-permeable polyethylene film according to the present invention has excellent adhesive strength, constructability, flexibility and mechanical strength.