Abstract: To study the impact of strong winds generated by high-speed trains on the side box-type substation of the tracks, this paper selects a specific model of signal box-type substation as the research subject. By constructing a simulation model of the box-type substation and a wind load model, the flow field distribution around the signal box is analyzed, and the variation patterns of wind speed around the box under different wind direction angles are simulated. Using Fluent software, the wind pressure forces on each wall surface are extracted, and numerical simulations of wind load calculations are conducted at a wind speed of 125 m/s, yielding the following key findings.