Abstract: Taking a wind farm in Xinjiang as an example, it established a 3D numerical simulation model of "Foundation－Base－Anchor－bolt Cage－Tower" based on the concrete CDP constitutive model. The mechanical characteristics of the anchor－bolt cage wind turbine tower and the characteristics of foundation damage under the action of different wind speeds (low wind speed, medium wind speed, high wind speed, and extreme wind speed) were explored. The results show that there is a positive correlation between the tower stress and the wind speed, and the stress is mainly concentrated in the middle and lower parts of the tower. The foundation damage is most severe under extreme wind speed, mainly occurring at the contact area between the foundation and the anchor－bolt cage and on the leeward side of the upper frustum of the foundation. The stress of the anchor－bolt cage is mainly concentrated in the middle of the leeward side.