The invention belongs to the wearable electron technical field, and relates to a preparation method for a holmium-zinc-copper alloy/polyester electronic conducting wire. The preparation method of the electronic conducting wire comprises the steps of polyester fiber cleaning, surface modification, catalytic activation and chemical plating of a holmium-zinc-copper alloy. The preparation method has the advantages: through 180 days of simulation of human body fluid corrosion tests, the metal ion overflow rate is less than 1 ppm, and the material has extremely high biological environment reliability; the electrical conductivity of the electronic wire is higher than that of copper and reaches more than or equal to 8*10<7> S/m. The holmium-zinc-copper alloy/polyester electronic wire can be used in smart clothing, and has bright application prospects and huge market potential.