Abstract:Basedontheargument of economic function being the most important function of a bridgehead, and throughanalysis of the proportion of GDP of Guangdong to the total GDP of China and the proportion of the Guangdong- ASEANtradevolume to the total volume of China-ASEANtrade, it is found that Hong Kong and Macao and Guangdong plays an importan role in China-ASEAN international trade. By analyzing the transportation infrastructure of Guangdong, Hong Kong, Macao and ASEAN, it is found that the international comprehensive transportation channelsbetweenGuangdong, Hong Kong, Macao and ASEANhastaken a basic shape. Hong Kong and Macao and Guangdong have a rather largeeconomic aggre- gate;the capacity of attraction and diffusion and sustainable development ability of Guangdong, Hong Kong and Macao are
powerful;modern information technology and transportation technology have shortened the geographical space. All have cont- ributedto the international trade bridgehead position of the three regions, and pearl river delta will become logistics distribution center of China-ASEAN trade. The three regions shall step up cooperations with Guangxi, Yunnan and other areas, radiatin- gits influence to peripheral areas thus achieving joint development with them, thus to further enhance the growth in trade be- tween China and ASEAN Countries and accelerates the construction of“One Belt and One Road”.