The invention relates to a nano-fiber loading transition metal catalyst, styrene - acrylonitrile copolymer dissolved by adding solvents reactor for mixing, heating, joining Rh, Pt or Pd chloride for the Coordination in an inert gas protection, formation high polymer and Rh, Pt or Pd complexes solution then vacuum distillation, put into the containers with a nozzle and connected with high-voltage electrostatic generator output terminal, screening the metal receive polymers and Rh, Pt or Pd complexes nanowires, nanowires hot pressing in the glass fiber fabric, crank out nanofibers supported transition metal catalysts, it has the advantages and effect of hydrogenation, oxidation reactions are normal temperature and pressure, prevent metal erosion and catalyst poisoning phenomenon occurred, high activity, does not produce harmful gases and easy separation and recovery, will not cause environmental pollution, can greatly simplify the process.