Wind tunnel tests and numerical analyses were conducted for wind-resistant performance of the lighting cable-net system of long-span bridges, determining the wind load of lighting cable-net and the corresponding wind- induced static response. Firstly, the test model for aerodynamic forces of lighting cable nets was designed, and aerodynamic coefficients of the cable nets with different densities and wind directions were extracted by wind tunnel tests. Then, the finite element models of three lighting cable nets were established using a finite element analysis software, and the aerodynamic forces acting on cable net were simulated based on the experimental results to analyze the wind-induced static response. Finally, the countermeasures were designed according to the response characteristics of the cable nets and the positions with the maximum displacement, and the effectiveness was evaluated. The results show that the wind load on cable net increases with the increase in cable density. The higher the wind speed, the more significant the effect of cable density on wind load becomes. As a result, the wind-induced static displacement of the cable net with a higher cable density is larger. The difference in stress distribution among the three cable nets with different cable densities is not significant, and the displacement response does not change much with the wind direction. Increasing the initial tension of vertical wire ropes or adding inclined cables could reduce the wind-induced static response of cable net.