The present invention relates to a fabric having a three-layered structure: a fiber substrate, a parylene layer, and an antibacterial layer. The fiber substrate is the fiber part of the fabric; the parylene layer is capable of providing a moistureproof and dustproof effect as well as preventing the fiber substrate from being catalyzed by photocatalyst and decomposed thereby; the antibacterial layer, which comprises nano-photocatalyst and/or nano-silver particles, is used to kill pathogenic germs.