▎ 摘　　要

NOVELTY - Nano drug carrier comprises magnetic graphene and fluorescent quantum dot, where fluorescent quantum dot is uniformly distributed on magnetic graphene. USE - Method for preparing nano drug carrier used for loading drugs (claimed) and detecting purposes. ADVANTAGE - The method enables to prepare nano drug carrier that ensures increased medicine stability, mild reaction condition, good biological compatibility, controlled release of anti-tumour medicine and wide application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing nano drug carrier, which involves: (A) dispersing magnetic graphene, iron salt, hexamethylenetetramine and graphite oxide alkene solution in ethanediol solution ultrasonically for 10-90 minutes for 4-12 hours at 150-220 degrees C; (B) separating magnetic graphene using water and anhydrous ethyl alcohol; (C) drying magnetic graphene; (D) dispersing magnetic graphene in distilled water and dispersant ultrasonically for 20-60 minutes uniformly; (E) oscillating obtained mixture with anti-tumor medicine at room temperature for 2-10 hours; (F) washing obtained material; (G) freeze-drying washed material for 48 hours to obtain drug containing compound A; (H) dissolving quantum dot in distilled water using N-hydroxyl succinimide to obtain reaction solution B; (I) mixing medicine containing compound A with distilled water, dispersant and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, ultrasonically for 10-30 minutes to obtain reaction solution C that is mixed with reaction solution B at room temperature for 2-8 hours; and (J) centrifuging obtained mixture to obtain product.