The utility model relates to a wire stripper for skinning rubber insulated cables and cable cores and particularly relates to a wire stripper capable of adjusting a wire-stripping length. The wire stripper comprises a wire stripper body. A pedestal is arranged on a board of a wire-stripping alloy steel pawl on the wire-stripping body. The pedestal is fixedly provided with a horizontal insertion pipe. A horizontal rod of a wire-stripping length limitation rod composed of the horizontal rod and a vertical rod connected in a head-to-tail manner is inserted in the insertion pipe. A body of the insertion pipe is provided with a vertical bolt hole communicated with a pipe cavity of the insertion pipe. The bolt hole is internally provided with a bolt. An end part of the bolt in the bolt hole in the body of the insertion pipe is abutted against the horizontal rod of the wire-stripping length limitation rod. When an end of a wire or a cable is abutted against the vertical rod of the wire-stripping length limitation rod, the horizontal rod cannot slide in the insertion pipe, a stripper handle is compacted tightly, and insulation layers of the wire and the cable can be stripped, and problems that the wire and the cable are cut off are solved. The wire stripper provided by the utility model can skin rubber insulated cables and cable cores conveniently and effectively, and can adjust the wire-stripping length of the wire and the cable.