The invention discloses an electric transmission line insulator device capable of eliminating a flashover phenomenon by wind power. The device structurally comprises a flashover elimination device, aninsulating sheath, a high-tension insulator and an installation foot plate, wherein the flashover elimination device consists of a stand column, a wind power plate, an umbrella shading plate, positioning insertion rods and a moisture elimination mechanism. Wind power which is positioned in a high place and is stable for a long time is used for driving the wind power plate, so that the wind powerplate drives the umbrella shading plate to rotate, the umbrella shading plate generates wind power through a triangular wind plate to dry moisture on the upper end of the high-tension insulator, the umbrella shading plate drives a fixed guidance rack to rotate through the positioning insertion rods, the fixed guidance rack drives a water wiping mechanism to clean moisture and dirt on the surface of the high-tension insulator, the high-tension insulator is kept dry and clean for a long time, and the flashover phenomenon is reduced.