EHV transmission lines are characterized by high voltage levels and large transmission capacity, and their safety is related to the normal operation of the power system. The UHV steel pipe tower is an important support structure for the transmission line, which is itself highly flexible, making it more sensitive to the action of wind loads and prone to wind-damaged collapse accidents. The mechanical properties of the bolt connection nodes in transmission towers can directly affect the static and dynamic response of the structure, which in turn affects the wind vulnerability of transmission towers. Therefore, the analysis of wind damage vulnerability of EHV steel pipe towers considering the loosening of bolted connections has important engineering application value.