Abstract: Accordingto the actual problems of the porosity in asphalt surface,the relation of the asphalt surface porosity with the pavement first-stage damage,water permeable property,strength of the asphalt mixture,water stability of the asphalt mixture are analyzed.The influence of the asphalt mixture porosity on the durability of the asphalt mixture,the cohesiveness of the asphalt and the aggregate are discussed,which has the instruction role for the control design and construction of the asphalt surface porosity.