The invention discloses a suspension insulator string type wind-power full-automatic sweeper for power transmission lines. The sweeper comprises a sweeper wheel ring, wind-power rotating blades, lifting blades and internal hairbrushes, wherein the sweeper wheel ring is of a circular ring structure and sleeves a line suspension insulator string, the internal hairbrushes are uniformly distributed in the sweeper wheel ring, one ends of the internal hairbrushes are fixed on the inner wall of the sweeper wheel ring, and the other ends of the internal hairbrushes are distributed to extend towards the center of the sweeper wheel ring; and the lifting blades are uniformly distributed on the outer wall of the sweeper wheel ring, and the wind-power rotating blades are arranged on the vertical directions of the lifting blades and are used for generating lifting airflow under the action of wind power so as to drive the whole sweeper to rotate or simultaneously go up and down. By utilizing a wind power and rotary ascending (descending) principles, line insulators can be automatically swept under the action of the wind power, the sweeper can be repeatedly used throughout the year, and the manual setting of a power source and the manual maintenance are omitted; and the sweeper is important invention and innovation in the hot-line sweeping of insulator strings of the power transmission lines.