▎ 摘　　要

NOVELTY - Preparation of magnesium aluminum-layered double hydroxide/graphene oxide/wood-based composite material comprises soaking wood in aqueous solution containing magnesium salts, aluminum salts and urea, subjecting to low-temperature hydrothermal reaction, and drying treated wood under vacuum at 50 degrees C for 12 hours to obtain magnesium aluminum-layered double hydroxide modified wood; mixing graphene oxide and water, stirring, and subjecting to ultrasonic treatment to obtain graphene oxide suspension; and dropping graphene oxide suspension on surface of obtained modified wood, drying at 50 degrees C for 3 hours, repeating dropping and drying 3-6 times to obtain the composite material. USE - Method for preparing magnesium aluminum-layered double hydroxide/graphene oxide/wood-based composite material used as building material for wood structure building and high-rise building (claimed). ADVANTAGE - The obtained composite material has fire warning and flame retardant functions, and stable material structure. The method is simple with low energy consumption.