There are disclosed a functional glue in which the crushed ginkgo (leaves) and paulownia (leaves) materials are mixed with rice glue or barley and wheat glue at a desired ratio, thereby providing a mothproofing function, an antibacterial function and a moisture proofing function, and a fabricating method thereof. The method of fabricating a functional glue mixed with crushed ginkgo (leaves) and paulownia (leaves) materials, comprises steps of: filling the crushed ginkgo (leaves) and paulownia (leaves) materials in a crusher, respectively or all together so as to crush the crushed ginkgo (leaves) and paulownia (leaves) materials; and putting each of the crushed materials or all of them in a stirrer along with rice glue, or barley glue and wheat glue so as to fairly stir the crushed material and the glue.