▎ 摘　　要

NOVELTY - The polylactic acid microsphere comprises 0.01-5 mass% of polylactic graphene oxide. USE - Polylactic acid microsphere. ADVANTAGE - The polylactic acid microsphere can be prepared in a simple and cost-effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing polylactic acid microsphere, which involves: (A) blending polylactic acid and graphene oxide to form a composite material; and (B) volatilizing the formed mixture to remove solvent at controlled temperature. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscopic image of the polylactic acid microsphere.