Fumin Bridge in Tianjin is the first self anchored Suspension bridge with single tower space cable structure in China. Some new construction technologies related to self anchored Suspension bridge with space cable structure were applied in the construction. This article mainly introduces the key construction techniques for the upper suspension structure, such as the installation and adjustment of catwalks, the installation of main cables, and the installation of cable clamps and slings, providing reference for the construction of self-anchored suspension bridges with space cable structures in the future