Accelerating the construction of Beijing’s international aviation hub and optimizing international aviation accessibility can give full play to the efficiency advantages of civil aviation，reduce the time and space distance between Beijing and major international cities，build good external connectivity conditions，promote trade facilitation and factor flow，and help the agglomeration of the high-quality international resources. This would lay a solid foundation for Beijing to develop into an international exchange center. This chapter firstly analyzes the status quo of Beijing’s international aviation accessibility，clarifies the current bottleneck problems，and specifically finds that Beijing has “aviation resources”，“transit connection ability”，“hinterland radiation absorption ability”，“visa customs clearance facilitation policy”，etc. There are still obvious deficiencies，which limit the development of Beijing’s international aviation accessibility. Through the introduction and analysis of the advanced experience of foreign cities and regions，combined with the specific situation of Beijing，this paper puts forward specific policy suggestions for improving Beijing’s international aviation accessibility. It is recommended to focus on “opening the fifth freedom rights”，“dual-hub function positioning”，“international flight slot allocation”，“visa facilitation”，“attracting international airlines to enter”，“strengthening the construction of multimodal transport in the Beijing-Tianjin-Hebei region”，Active measures have been taken in various aspects such as “improving the transfer capacity of dual hubs” and “improving the non-aviation business capacity”.