This study adopted the NURBS surface design method to complete 3D digital design modeling of a high speed train headstock. Based on the turbulent model of the three-dimensional, steady, incompressible, vis- cous flow field N-S and k-着 equations, the finite-element-volume numerical simulation method was used to an- alyze and calculate the relationship between train speed and air resistance. At the same time, further analysis of the pressure field and velocity field of the train operating in strong lateral wind environments with different wind direction angles was conducted. The study found that the air resistance of the train was proportional to the square of the running speed when the train was running in a wind-free long straight railway line. When the wind was running in the crosswind, the air resistance coefficient increased first and then gradually decreased with the expansion of the wind angle. The distribution structure of the flow field was complex and irregular. When the crosswind condition was more serious, the positive pressure zone was mainly distributed on the windward side of the train, while the negative pressure zone was mainly distributed on the leeward side and the top of the train, and the negative pressure performance was more intense. The front-end stagnation point of the train shifted to- ward the windward side, resulting in a huge pressure difference between the windward side and the leeward side.