The invention discloses a high-voltage cable stripping device comprising a stripping die and a gyrator. The stripping die comprises an upper clamping block and a lower clamping block, the upper clamping block and the lower clamping block are symmetrically arranged to form a clamping gap for clamping a cable, and a stripping knife is disposed beside the clamping gap formed by the upper and lower clamping blocks. The gyrator includes a gear transmission box and a bevel gear transmission box, and the gear transmission box and the bevel gear transmission box are connected by a gear transmission rod. The stripping die and the gyrator are fixedly connected by a connecting plate, and the gyrator drives the stripping die to rotate through the connecting plate when the gyrator rotates. The high-voltage cable stripping device of the invention can adapt to the cable stripping demands of different wire diameters, the replacement of the stripping die is not needed in stripping the cables of different wire diameters, the working efficiency of a worker is greatly improved, at the same time, the operator is away from a high-voltage wire, and the safety of the operator is ensured to the greatest extent.