The invention discloses a double-layer antioxidant PVC cable, which comprises an inner insulating layer and an outer antioxidant layer, wherein the insulating layer is prepared from the following rawmaterials in parts by weight: 40-60 parts of PVC resin powder, 15-25 parts of lightcalcium carbonate, 10-20 parts of triple superphosphate, 15-25 parts of DOP oil, 5-10 parts of chlorinated paraffin oil, 1-3 parts of epoxidized soybean oil, 2-3 parts of stabilizing agent, 0.5-1 part of stearic acid, 0.3-1 part of polyethylene wax and 0.2-0.5 part of pigment; the antioxidant layer is prepared fromthe following raw materials in parts by weight: 40-60 parts of PVC resin powder, 20-30 parts of DOP oil, 1-3 parts of epoxidized soybean oil, 1-2 parts of stabilizing agent and 0.05-0.2 part of antioxidant. In preparation of the cable disclosed by the invention, an extruder is adopted, and two insulating layers are extruded on a conductive core; the melt materials of the insulating layers and theantioxidant layer are mixed in the head in advance; under the action of high temperature and pressure, the insulating layers and the antioxidant layer are tightly combined; compared with two extrudersin the prior art, the production cost is reduced.