Abstract:The main access road of comprehensive transportation hub is easily limited by various factors such as terrain, planned site, rail transit, etc. How to choose a suitable scheme of access road will greatly affect the internal and external transportation organization and service level of the comprehensive transportation hub. Combined with the main access road project of the Pearl River Delta Hub (Guangzhou New) Airport, bounded by the red line of the airport, the discussion is carried out for the outside and inside of the airport. The comparison focus on the traffic organization, the entrance and exit settings, the impact of collinear with the high-speed rail, the possibility of reconstruction and expansion, the effect of landscapes, and engineering investment. Finally, the comprehensive optimal recommended scheme is determined.