The invention belongs to the technical field of a power system, and relates to a handcuff type disconnection-preventing ground line. The handcuff type disconnection-preventing ground line mainly comprises a handcuff type wire clip, a connection sleeve pipe, an independent-tooth clamping spring lever and an insulation rod, wherein the insulation rod is arranged in the connection sleeve pipe, a cap brim of the insulation rod is right clamped at a thickness intersection of an inner diameter of the connection sleeve pipe, a handcuff type wire clip base is arranged in the connection sleeve pipe, so that the wire clip base and the top of the insulation rod are connected in the connection sleeve pipe, an arc ramp of the top of the insulation rod is aligned to the tail end of the independent-tooth clamping spring lever, the independent-tooth clamping spring lever is enabled to be ejected by triggering the arc ramp when the insulation rod rotates so as to make an independent tooth and a bias tooth separated, the insulation rod can be enabled to flexibly rotate in the connection sleeve pipe, the ground line is firmly connected onto a dead line during the operation process of a worker, the ground line will not fall off and is convenient to disassemble on the conditions of mistake touch and windy days, the safety measure before operation is more effectively completed by the worker, and the handcuff type disconnection-preventing ground line is safe and reliable.