The landscape design scheme and structural computational analysis for the main bridge of Tonggang Bridge - a urban landscape bridge across Tongyu River in Jiangshu Province Yancheng City Funing Development Area are introduced. The main bridge span of this bridge is 60 m+110 m+60 m =230 m. The arch-girder composite structural system is adopted. Through the structural calculation and stability analysis of the whole bridge, the rationality and safety of the bridge scheme are verified.