Abstract: In the process of urban construction, landscape arch bridge is an important part of landscape design.It can enhance the beauty and integrity of urban space, and enhance the visual effect of urban landscape with diversified structural features. In this regard, taking a landscape arch bridge project as an example, the precompression construction process of its arch ring support is studied, and specific quality assurance measures are analyzed, in order to significantly improve the design and construction quality of landscape arch bridges and play its role in improving the aesthetics of urban design.