The utility model relates to a medical wire rod, which comprises a plastic contact outer tube, a plurality of wires and a synthetic fiber anti pulling wire. The wire is threaded in the contact outer tube. The synthetic fiber anti pulling wire is arranged in the contact outer tube. The synthetic fiber is used to resist pulling and twisting, so as to prevent the fracture of medical wire rod.一種醫療線材,其包含一塑膠接觸外管、複數導線以及一合成纖維抗拉線。導線穿設在該接觸外管之內。合成纖維抗拉線穿設在該接觸外管之內。藉由合成纖維抗拉線抵抗拉扯及扭轉,以防止醫療線材斷裂。