Guangzhou Metro Line 18 is positioned as the North-South Express Line, connecting Pearl Bay District, Panyu District Central City, Pazhou West District E-commerce District, Zhujiang New Town and guangzhou east railway station in series. After opening, it will realize the rapid rail transit connection between Guangzhou Central City and Nansha New District, support the development of Nansha New District and Nansha Free Trade Zone, and connect the downtown network, supplement the north-south axial passenger flow development corridor, and enhance the comprehensive transportation hub function of guangzhou east railway station. It is one of the first underground city express lines in China that can realize the subway service level. In the future, Guangzhou Metro Line 18 is expected to extend to Zhuhai.