Abstract: In order to investigate the deformation characteristics of pile foundation of electric tower under the combined influence of mining and wind load. Take the pile foundation of electric tower in 3302 working face of Zhujiamao Coal Mine as the research target. Based on the geological data of the site survey, the pile foundation sinking value was predicted by the section function method, and the deformation characteristics of pile foundation of electric tower were analyzed by FLAC^3D numerical simulation software. The results show that under the influence of mining, the topography of loess valley gullies has a strong influence on the moving deformation of the surface, and the movement deformation of slope body is larger than that of flat land and slope top; significant effects of mining action on the deformation of surface pile foundation, as well as the effects of wind loads on pile foundations; comparing the predicted, simulated and actual monitoring values of loess valley topography under the combined effect of mining and wind load, it is found that the simulated values are more in line with the actual situation. The simulation results show that the maximum sinkage difference of pile foundation was found between the two piles of A and B, with a settlement difference of 44.45 mm and a tilt value of 2.22 mm/m. The closer the pile is to the goaf, the greater the impact will be.