The utility model belongs to the power cable construction tool technical field, refers to a universal tool applied in a large cross section single core cable ground wire fixation, and especially relates to a single core power cable ground wire fixing clamp; the single core power cable ground wire fixing clamp comprises a nonmagnetic stainless steel band and an aluminium alloy support base; the nonmagnetic stainless steel band is fixedly arranged on the aluminium alloy support base having an unidirectional locking device. A vertical segment of a cable ground wire on a pole has no specific fixing clamp, and a cable ground wire clamp is hard to mount and fix, the single core power cable ground wire fixing clamp can solve the said problems, and realize fast fixation of the cable ground wire; the height of the aluminium alloy support base can be changed to control the distance between a cable ground backflow wire and a cable body in a cable line paving path.