In order to study the influence of this phenomenon on the force of the suspension cables, this paper designs a static tensile test scheme of axial deflection for the basic unit of the suspension cables. Firstly, the corroded steel wire specimens were prepared by accelerated copper salt corrosion method, and the static tensile tests were carried out on the specimens at four different coaxial deflection angles (0, 10, 20 and 30mrad). And Ansys is used to simulate the test and the pitting. The results show that the weight loss rate and the average corrosion depth of steel wire increase linearly with the corrosion time, but the corrosion rate decreases quadratically with the corrosion time. The ultimate tensile properties of steel wire decrease with the increase of deflection Angle. The coupling of deflection Angle and corrosion will accelerate the weakening of the tensile strength of steel wire. The numerical simulation is in good agreement with the experiment, which effectively verifies the law obtained by the experiment. The phenomenon of concentrated stress occurs when there are pits in steel wire, and the maximum stress increases with the increase of deflection Angle.