As a novel typical wind-sensitive structure, the random distribution characteristic of wind load on the surface of cylinder-conic section steel cooling tower is in an urgent need to be studied. A novel straight-cone steel cooling tower (189 m in high) that will be built at home is taken as an example, and numerical simulation of wind field is conducted by adopting large eddy simulation (LES) to obtain three-dimensional aerodynamic force time history. Firstly, the average and fluctuating wind pressure coefficients are individually compared with the relevant codes and the results from field measurements and wind tunnels at home and abroad to illustrate the validity of numerical simulation method. And then, the distribution of the average pressure, the fluctuating wind pressure, the extreme wind pressure and the drag coefficient are extracted. The estimation formulas and distribution curves of average and extreme wind pressure of cooling tower are presented. The main conclusions can be used as reference for the design of wind load of this kind of super large steel structure cooling tower with novelty in structural form.