The utility model discloses a steel wire rope fixing device used for fixing a steel wire rope on a cross arm. The steel wire rope fixing device comprises an outer frame, an inner frame, a first buffer interlayer and a second buffer interlayer, wherein the outer frame includes an outer frame upper half and an outer frame lower half which are connected by a connecting piece, assembly holes are arranged below the outer frame lower half, the inner frame includes an inner frame upper half and an inner frame lower half, the inner frame upper half is fixedly connected to the outer frame upper half, the inner frame lower half is fixedly connected to the outer frame lower half, the first buffer interlayer is arranged on the lower surface of the inner frame upper half, and the second buffer interlayer is arranged on the upper surface of the inner frame lower half. The steel wire rope fixing device enables a steel wire rope controlling the pre-bias angle to be fixed on the cross arm, is safe and reliable in the using process and does not cause damage to the cross arm.