The bright announcement Yi Seed biocompatibility macromolecules of this Hair, can be used to Learn Key Knot repair Ornaments magnetism nanometer particles. The biocompatibility macromolecules can couple mono- Xing Bian Knowledge molecules of a Designed and/or Firefly light dye Elixirs. This Hair Ming And disclose the magnetism nanometer particle that Yi Seed have biocompatibility, contain above-mentioned biocompatibility macromolecule.本發明揭示一種生物相容性高分子,可用以化學鍵結修飾磁性奈米微粒。該生物相容性高分子可以耦接一專一性辨識分子或/及一螢光染劑。本發明並揭示一種具有生物相容性之磁性奈米微粒,其含有上述生物相容性高分子。