The invention discloses an 
electromagnetic shielding flame-retardant material for a carbon 
fiber base material as well as a preparation method and application of the 
electromagnetic shielding flame-retardant material. The material comprises 20-50 parts of a water-based 
flame-retardant 
polymer adhesive, 5 to 20 parts of a 
metal powder conductive filler; 8 to 40 parts of a macromolecular intumescentflame retardant; 4 to 10 parts of an 
ionic liquid containing 
phosphorus, 
nitrogen and 
halogen; 0.5 to 2.5 parts of a catalytic 
charring agent, 0.5 to 5.0 parts of a composite 
antioxidant, 0.5 to 5 parts of an antibacterial 
mildew inhibitor, 0.5 to 5.0 parts of a flame-retardant cross-linking agent, 0.3 to 3.0 parts of a 
wetting agent, 0.3 to 3.0 parts of a dispersing agent, 0.3 to 3.0 parts of aleveling agent, 0.2 to 2.0 parts of an antifoaming agent and 0.3 to 3.0 parts of a thickener. The 
electromagnetic shielding flame-retardant material is applied to a carbon 
fiber base material; a firmand durable protective layer is formed on the surface; the carbon 
fiber base material can be protected from being invaded by 
bacteria and mould, can endure 
environmental change, has high and low 
temperature resistance and damp and hot 
smoke resistance. The electromagnetic shielding flame-retardant material is safe and environment-friendly, a protective layer formed by spraying or 
coating is low insurface resistance, high in shielding efficiency and good in flame-retardant effect, and when meeting high-temperature flames, the electromagnetic shielding flame-retardant material can rapidly expand into carbon, insulate heat and 
oxygen and protect a carbon fiber base material from being damaged.