Abstract: Taking the arch and corridor project of Xiangyu tourist and sightseeing place in Linyi, Shandong province as the background, the composite structure system of large rise-span ratio cross steel arch and hectometre corridor was analyzed and designed. The overview of the project was introduced, and the structural design features of the system were discussed. The core content of the design of corridor, arch and pedestrian bridge in the structural system was expounded. The structural form of cross steel arch support with large rise-span ratio was presented. The design characteristics of the corridor with weak connections was pointed out. It was defined that TMD device was used to control the vibration of the corridor and pedestrian bridge under the excitation of walking load. The ANSYS finite element software was used to analyze the mechanical characteristics of the composite structure. The results showed that the structural performance was safe and reliable, and the indexes conformed to the design specifications. The key technical issues needing further study were put forward.