The utility model provides a wire grip for a power transmission and transformation line, belongs to the field of power equipment, and aims to solve the problems that the conventional wire grip is complex in clamping operation, is not beneficial to high-altitude operation of an operator, and causes low working efficiency. The device comprises a tightening frame (1), a rotating frame (2) is arrangedoutside the tightening frame (1); the rotating frame (2) is fixedly connected with a transmission device (3); the transmission device (3) is provided with a steel cable (4); the end, away from the transmission device (3), of the steel cable (4) is fixedly connected with a steel cable fixing frame (5). The bottom of the steel cable fixing frame (5) is sleeved with a fixing rod (6), the bottom of the fixing rod (6) is fixedly connected with a clamping device (7), the top of the tightening frame (1) is fixedly connected with a fixing block (8), the top of the fixing block (8) is fixedly connected with a supporting rod (9), and the top of the supporting rod (9) is fixedly connected with a positioning hook (10).