Abstract: An improved eyeglasses fastening device has a fastening belt, a pair of decoration attachments, a pair of connecting pieces and two elastic rubber rings. Each decoration attachment having one side provided with an artistic printing has a two-staged engagement through hole in the diametric direction which is a round hole in communication with an oval hole. Each connecting piece has a central extension finger provided with a pointed piercing end. The decoration attachments are movably guided through the ends of the fastening belt respectively and the rubber rings are also secured to the terminals of the fastening belt by way of the connecting pieces respectively so that the decoration attachments can be adjustably engaged with the rubber rings when the rubber rings are attached to the temples of an eye glasses. Such a structure enables the terminals of the fastening belt covered with the connecting pieces to be concealed in use.