▎ 摘　　要

NOVELTY - The method involves selecting a carbon material. The carbon material is prepared as a carbon powder particle, where the carbon powder particle is not fully aerobic reaction and heats to change color. The temperature is stopped, and the temperature is reduced after the carbon powder particles are discolored once. The carbon powder particles are cooled for first time and reduces the color to the primary color, where the carbon powder particle is not fully aerobic reaction for the second time. The color is heated and changed again. The heating process is stopped after the carbon powder particles are discolored for the second time. The carbon powder particles are cooled for the second time to obtain the graphene. USE - Graphene preparation method used in mobile device, aerospace, and energy battery field. Uses include but are not limited to optical, electrical, mechanical, micro-nano processing, energy, biomedicine and drug delivery. ADVANTAGE - The method enables preparing graphene, which has low pollution and less energy consumption in the process, simple operation, effectively solving the problems of high cost, heavy pollution and low production efficiency in the graphene technology, realizing the purpose of graphene the cost of the preparation method, improving the product competitive power and protecting environment.