Abstract:The GUANMU arched bridge, which exists only in Fujian and Zhejiang, is regarded as a very important ancient bridge building and construction technique in both material and intangible cultural heritage. The roof of the bridge is obvious, and the Ridge forms the main contour line and the skyline. Therefore, the ridge decoration plays a decisive role in the shape of the roof and even the whole bridge. In this paper, the form of Ridge Decoration of the Gallery House of Fujian guan-mu arched bridge is summarized and analyzed, hoping to expand the research scope of this particular region and unique architectural type, and to provide reference for the study of Ridge Decoration and roof of Chinese traditional architecture.