As opposed to traditional symmetrical two-way pylons, the sail-shaped pylon presents an arched shape on the longitudinal bridge, and the flow field generated around it presents more obvious three-dimensional spatial effects when air flows. Therefore, the static and dynamic characteristics of sail-shaped pylons under the action of wind load are also different from those of conventional pylons. In order to study the wind resistance performance of the sail-shaped pylon in free-standing stage, taking the sail-shaped bare pylon of a certain cable-stayed bridge as the engineering background, an aeroelastic model satisfying the first 2 order frequency similarity ratio was designed by using the method of metal core beam plus wooden outer moldel. On this basis, the responses of vortex vibration and galloping in uniform flow field and turbulent flow field, as well as buffeting response in turbulent flow field were obtained by wind tunnel test of aeroelastic model, and the wind resistance performance of sail-shaped pylon of cable-stayed bridge was studied. The results show that when the wind direction is 0°, Vortex-induced vibration(VIV) may occur at the wind speed of 25.3 m/s ∼ 30.67 m/s, and the unilateral amplitude of VIV at the top of the tower is 79.5 mm. The wind tunnel tests of turbulence aeroelastic model show that, under the action of the design reference wind speed under construction condition, when the wind direction Angle is 80°, the root mean square of buffeting displacement in the transverse direction of the top of the pylon is the largest, which is 13 mm; when the wind direction Angle is 90°, the root mean square of buffeting displacement in the transverse direction is the largest, which is 14 mm, which does not affect the construction safety of the pylon.