▎ 摘　　要

NOVELTY - Preparing graphene oxide-polylactic acid composite material involves weighing 10-30 pts. wt. refined lactic acid, 0.25-0.5pts. wt. graphene oxide powder, and 0.5 wt.% catalyst refined lactic acid, putting into reactor together, performing prepolymerization reaction under vacuum condition, performing prepolymerization reaction, performing postpolymerization reaction to obtain crude product, purifying the obtained crude product to obtain the graphene oxide-polylactic acid composite material. USE - Method for preparing graphene oxide-polylactic acid composite material. ADVANTAGE - The prepared graphene oxide-polylactic acid composite materialsolves problem of high brittleness, poor impact resistance, and poor heat resistance.