The utility model discloses a fix the fastener on high -pressure wire, including locking mechanism and a clamping base who mutually supports and the 2nd clamping base, be equipped with first arc groove on the clamping base and lie in the first connection pterygoid lamina of first arc groove both sides, the pterygoid lamina is connected to the second that is equipped with the second arc groove on the 2nd clamping base and lies in second arc groove both sides, first arc groove with the relative fixed chamber that holds high -pressure wire that forms of second arc groove, under locking mechanism's effect, a clamping base and the 2nd clamping base press from both sides tightly the high pressure wire. The utility model discloses a fastener, the fine laminating high pressure wire surface of a clamping base and the 2nd clamping base ability increases the area of contact between a clamping base and the 2nd clamping base and the high -pressure wire to the better fixes windage yaw monitoring devices on high -pressure wire, prevents that windage yaw monitoring devices is not hard up. The utility model discloses on the other hand provides a windage yaw monitoring devices who has above -mentioned fastener.