Carbon-containing nanostructure composite, polymer material using same and preparation method

A carbon-containing nanostructure composite comprising graphene, amorphous carbon and a non-carbon and non-oxygen element, wherein the non-carbon and non-oxygen element accounts for 0.5-6 wt% of the composite. By the control of the content of the non-carbon and non-oxygen element in the composite, an excellent far-infrared effect and a microbicide effect are achieved, and the normal emissivity of the far-infrared property thereof reaches 0.85 or more and the microbicide rate reaches 95% or more. When applying the carbon-containing nanostructure composite to a polymer material in a relatively low amount for modifying the polymer material, the composite can bring about a remarkable far-infrared property and microbicide property without pre-modification and activating treatment.