The utility model discloses a power barrier-clearing tool for power transmission and transformation lines, and the tool comprises an operating rod body. The upper end of the operating rod body is provided with saw blades which are provided with sawteeth. The lower part of the operating rod body is provided with an insulating layer, and the exterior of the insulating layer is provided with concave and convex points. The number of the saw blade is three, and the three saw blades are arranged in the shape of Y. The concave and convex points are distributed at two sides of the insulating layers, and are made of antiskid materials. The tool provided by the utility model can clear foreign matters (nests, branches and the like) conveniently and quickly, and the lower part of the operating rod is provided with the insulating layer, thereby solving the problems of electric leakage and electric shock in the process of barrier clearing. The exterior of the insulating layer is provided with the concave and convex points, thereby enabling the operating rod to achieve an antiskid effect in use, and preventing the operating rod from falling off from a hand in operation. The tool is steady and firm, and is liable to be popularized.