With the continuous development of science and technology and economy in China, the higher demands are being placed on the urban environment. As a crucial element in shaping a city image, the municipal roads must not only meet the basic functional requirements of transportation, but also enhance the urban landscape, improve the ecological environment, and create the pleasant public spaces. But the traditional masonry retaining walls are hard to meet these urban landscape requirements. Taking the pile-plate green ecological retaining wall used in a project in Guangzhou as an example, a form of retaining wall suitable for deeply excavated cuttings of municipal roads is introduced, and the key points and challenges of the technology are analyzed, which provides a reliable reference for practical engineering applications in the future.