In order to improve project benefits or reduce project losses, the calculation results of wind resources in local complex terrain were compared and analyzed using different models for two actual projects based on the performance of flow field influenced by different terrain. The results showed that due to the acceleration and barrier effect of different terrain, the velocity at different locations of the wind flow field of local complex terrain was no longer positively correlated with the terrain elevation. Terrain,wind tower,site location and other factors should be comprehensively considered for resource analysis.In order to establish the flow field calculation model, analyze the wind resources and calculatethe power generation more accurately, it was suggested to change the size of the model calculation area, supplement the wind measurement data and improve the topographic map.