▎ 摘　　要

NOVELTY - Preparing high-concentration oxide graphene solution comprises preparing 0.1-10 mg/ml low-concentration graphene oxide solution, then performing first refinement on low-concentration graphene oxide solution and performing concentration treatment on the first refined solution to obtain high-concentration graphene oxide solution, where the concentration treatment includes adding graphene oxide to the first refined solution to performing the second refinement, and adjusting the pH value of the second refined solution to 4-5. USE - The high-concentration oxide graphene solution is useful for preparing graphene oxide macroscopic bodies (claimed) in energy, biology, environmentally friendly and other fields. ADVANTAGE - The method has low cost and simple process; and is suitable for industrial production; and produces high-concentration graphene oxide solution which has excellent fluidity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for high concentration graphene oxide solution obtained by above method.