It is very hard to obtain uniformly dispersed conductive polymer nanocomposites because of the accumulation tendency of nanomaterials. In current work, the aramid nanofiber/silver nanowire composite film was prepared by mixing evenly through the solution and then vacuum filtration. The composite film exhibited desirable physical properties such as high tensile strength (121 MPa), outstanding electrical conductivity (652 S·cm^-1), and thermal conductivity (0.12 W·m^-1·K^-1). These endow our aramid nanofiber/silver nanowire composite film with possible applications in infrared stealth and harsh environments.