For oblique arch, curved beam, space oblique composite system of suspension bridge, whose force transmission path and spatial stress is complex, robustness characteristics is strong, and no engineering experience can be used for reference. In order to analyse wind resistant performance of the Tongtai bridge, the aeroelastic model of the bridge is designed and fabricated by accurately simulating the flow field in the boundary layer of the field and using wind tunnel test technique, calculated vortex vibration, buffeting and aerodynamic stability of the arch-rib and whole bridge under uniform flow field and turbulent flow field at different attack angle, angle condition. The experimental results show that the bridge has good aerodynamic stability and no obvious vortex vibration occurs. The vertical and lateral displacement of the arch rib 1/4 section is higher than that of the crown, but it meets the requirement of wind resistance.