In order to effectively control the asphalt pavement structural layer smoothness,based on the Shaanxi test road,through different detecting methods,the mutual relation of smoothness indexes and the construction smoothness transmit model between layers are established.According to the smoothness grade standard,the smoothness control standard of each layer is presented,and the asphalt pavement smoothness control measure is suggested finally.Research accomplishments have important reference value for improving the pavement construc- tion smoothness level.