Into　the　21st　century,　remanufacturing　engineering　has　been　accepted　by　more　and　more　people　in　China.　Remanufacturing　is　an　industrial　maintenance　technology　for　worn　or　waste　electro-mechanical　products　using　advanced　technology,　which　means　the　high-level　stage　for　the　maintenance　and　surface　engineering.　In　this　paper,　a　new　automotive　high　velocity　arc　spraying　system　was　introduced.　And　three　kinds　of　advanced　amorphous　and　nanocrystalline　metastable　coatings　were　developed,　including　Fe,　Ni　and　Al-based　amorphous　and　nanocrystalline　composite　coatings.　Their　research　development　and　applications　were　introduced.　And　the　development　trends　of　high　velocity　arc　spraying　system　and　advanced　metastable　surface　protective　coating　materials　on　the　remanufacturing　engineering　were　indicated.