The invention relates to the technical field of tool clamps and discloses a wire clamp positioning tool, which comprises a pedestal, wherein a fixed clamp arm and a movable clamp arm are arranged on the lower end of the pedestal; the fixed clamp arm is fixedly connected to the pedestal; a cavity is arranged in the bottom surface of the pedestal; a horizontal sliding block is arranged in the cavity and is connected to the pedestal through a sliding rod; a vertical sliding block is arranged in the cavity; a tilted slope is arranged on the lower end face of the vertical sliding block; a pressure-bearing surface jointed with the slope is arranged on the upper end face of the horizontal sliding block; a reset spring is arranged between the horizontal sliding block and the lateral surfaces of the cavity; a threaded hole connected to the cavity is arranged in the pedestal; a screw is arranged in the threaded hole; the lower end of the screw is rotatably connected to the vertical sliding block; the upper end of the screw stretches out the pedestal and a connecting ring is arranged on the end; the outer end of the fixed clamp arm extends to form a fixed clamping part; the outer end of the movable clamp arm extends to form a movable clamping part parallel to the fixed clamping part; and a clamping gap is formed between the fixed clamping part and the movable clamping part. The wire clamp positioning tool has the beneficial effects of convenience for use and good stability.