Tianjin Fumin Bridge is the first space cable self-anchored suspension bridge in China. The main cable is spatial, the suspension cable is also spatial, and the method of determining the bridge alignment is very different from that of the planar cable suspension bridge. Space cable suspension bridge cable clamps in the system conversion needs to be rotated with the suspension cable in space, so the design of a new type of rotatable cable clamp structure form. The study of the rotatable clamps of Tianjin Fumin Bridge provides a useful exploration and accumulates a lot of experience for the construction of space cable suspension bridges in the future.