Abstract:At present, there is no unified standard for the planning and utilization of the space under urban viaduct in China. How to develop these restricted space areas more richly and reasonably is of great significance to the intensive use of urban land resources. In this context, the limiting factors of the space utilization under the conventional urban viaduct are analyzed, and some typical patterns and cases of the space development under the viaducts at home and abroad are introduced in order to provide reference for the majority of colleagues engaged in urban planning and design.