▎ 摘　　要

NOVELTY - The preparation method of composite cellulose acetate fiber involves weighing acetone, graphene and acetate fiber, grinding cellulose acetate into powder, adding Lewis acid and melamine in a mass ratio of 50:(1-5) and then stirring at 45 degrees C for 0.5-1.5 hours, defoaming the mixture and then wet spinning, cooling the mixture and then soaking in sodium bisulfite solution and drying. Acetone and Lewis acid are used in a mass ratio of 8:(2-5). USE - The method is useful for preparation of composite cellulose acetate fiber, which is useful in artificial wig and flame-retardant clothes (claimed). ADVANTAGE - The method enables simple preparation of composite cellulose acetate fiber with high yield and excellent flame retardant property, breaking strength and spinnability.