Abstract: High-strength aluminum alloy is an important lightweight and high-strength structural material. Its density and elastic modulus are about 1/3 of that of steel. Therefore, the dynamic characteristics of aluminum alloy transmission towers are different from those of steel towers. This article takes a 220 kV aluminum alloy double-circuit straight-line tower as the research object and conducts an analysis of the wind-induced vibration response based on the time-domain method. By establishing a finite element model of line elements that takes into account the elastic modulus of high-strength aluminum alloy materials, a dynamic time-history analysis is carried out to obtain the wind vibration coefficient. Then, by comparing it with the values specified in national standards and industry standards, suggestions for calculating the wind vibration coefficient of aluminum alloy transmission towers are put forward.