The utility model relates to a turning tool for adjusting rag bolt's nut, including joint unit that is used for the joint nut and the rotation unit that is used for rotating the joint unit, through linkage unit fixed connection between joint unit and the rotation unit, the joint unit sets up to the polygon, polygonal inscribed circle diameter is less than the circumscribed circle diameter of nut,the limit fixed connection at linkage unit and polygon place, the linkage unit includes an at least straight -bar spare I, when straight -bar spare I set up to many, wherein the hookup location of twostraight -bar spares I and joint unit was in the polygonal different edges at joint unit place. The utility model discloses a turning tool can easily enter into rag bolt's position, and is convenientfor adjust rag bolt's nut, has improved the efficiency of construction.