▎ 摘　　要

NOVELTY - Preparing a sandwich type flexible electromagnetic shielding material based on carbon fiber fabric, metal nickel nanoparticles and graphene involves preparing carbon fiber fabric by placing container containing biomass fiber fabric in a high-temperature pyrolysis device, and introducing inert gas into the high-temperature pyrolysis device for 1-60 minutes, and heating high-temperature pyrolysis device at a heating rate of 0.1-10 degrees C per minute under the protection of an inert gas. The temperature is raised to 200-2000 degrees C, and the temperature is maintained at 200-2000 degrees C, the temperature is maintained for 0.1-10 hours, and then the cooling rate is 0.1-10 degrees C per minute. The temperature of the high temperature pyrolysis device is lowered from 200-2000 degrees C to obtain a carbon fiber fabric. USE - Method for preparing sandwich type flexible electromagnetic shielding material based on carbon fiber fabric, metal nickel nanoparticles and graphene for preparing the electromagnetic shielding material. ADVANTAGE - The method enables to prepare a sandwich type flexible electromagnetic shielding material has a falexibility of the composite material, and eco-friendly, accurately control active ingredient distribution and construct specific micro-morphology.