In order to obtain the distribution of local wind pressures on roof of a low-rise building, the numerical simulation of a gable roof low-rise building with a 1.5∶[KG-*2/5]1∶[KG-*2/5]1 body type was performed based on the roof dividing several typical zones, compared with wind tunnel tests, the results obtained from the simulation match well, the reliability of the numerical simulation in analysis wind pressures of a low–rise building was verified. Based on numerical simulation, the distributions of local wind pressure on roof for different wind characteristics parameters were studied. Analysis results show that the wind direction has a whole effect on local wind pressure and show some regularity, Turbulence intensity has a different effect on local wind pressure, and has a great influence on areas of the windward roof; wind speed has a little effect on the local wind pressure. The research provides a foundation for the designing of low-rise building anti-typhoon in China's coastal typhoon-prone regions.