The invention discloses a drinking water carbon fiber filter and a preparation method and application thereof. The drinking water carbon fiber filter comprises a water inlet, a hybrid fiber filter layer, an antimicrobial filter layer, a heavy metal filter layer and a water storage tank in sequence from top to bottom; the water storage tank is internally provided with a heating element, and the hybrid fiber filter layer is formed by weaving thermoplastic fibers and activated carbon fiber filaments in a hybrid mode; the antimicrobial filter layer comprises a first layer activated carbon fiber filament fabric and a nano silver adhesive layer coated on the surface of the first layer activated carbon fiber filament fabric; the heavy metal filter layer comprises a second layer activated carbon fiber filament fabric and a KDF copper and zinc alloy coating sprayed on the surface of the second layer activated carbon fiber filament fabric. Currently universal particulate matter filter core materials are replaced with an activated carbon fiber fabric structure mode, and by means of a porous structure mode of the activated carbon fiber fabric itself, the filter core materials have better permeability compared with particle core materials; meanwhile, a fabric structure gives high distribution uniformity to filter materials, and the problem that water flow is not smooth in the water purification process due to the fact that particulate filter materials are stacked is effectively avoided.