The utility model discloses a cable live-line identification apparatus. The apparatus comprises an annular iron core, an induction chamber, an induction coil, an ammeter, a telescoping rod, a telescoping sleeve, a measuring range adjusting knob, a variable resistance case and a slide rheostat, wherein the induction chamber is arranged below the annular iron core, the induction chamber is internally provided with the induction coil, the induction coil is wound on the annular iron core, the lower end of the induction coil is provided with the variable resistance case, the variable resistance case is internally provided with the slide rheostat, the lower end of the induction chamber is provided with the telescoping rod, the telescoping rod is provided with the ammeter, the lower end of the telescoping rod is provided with the telescoping sleeve, and the left side of the telescoping sleeve is provided with the measuring range adjusting knob. According to the utility model, through the telescoping rod and the telescoping sleeve with an antiskid insulation sleeve, working personnel can keep a safety distance from cables during detection, the detection safety is further ensured, and at the same time, the slide rheostat arranged in the apparatus enables the apparatus to have multiple measuring ranges, so that the problem that the ammeter gets burnt and damaged due to over large induction currents, and the detection accuracy of the apparatus is also improved.