As the main distribution path of the airport, the rationality of the access road is very important to the efficient operation of the airport. In this paper, based on the flow of airport passenger and surrounding area ,the quantitative method and qualitative method are used to determine the scale of the access road . And then the traffic model is used to evaluate the adaptability between access road scheme and surrounding road, so as to ensure the rationality of access road scheme, which has guiding significance for similar projects.