This study presents the development of a bulk transparent supramolecular glass using host-guest molecular recognition between methyl-β-cyclodextrin (M) and para-hydroxybenzoic acid (H). The supramolecular glass is formed through noncovalent interactions, including host-guest complexation and hydrogen bonding, which enable high transparency and a bulk state. The material exhibits excellent optical properties, recyclability, compatibility, and thermal processability. The structure of the supramolecular glass includes short-range order (host-guest complexation) and long-range disorder (three-dimensional polymeric network), demonstrating typical glass characteristics. The study highlights the potential of supramolecular glass as a transparent material, with applications in industrial production and scientific activities. The supramolecular glass is formed by the self-assembly of M and H, with the presence of structural water playing a crucial role in the formation of the glass structure. The material is transparent, with high transmittance over a wide wavelength range, and exhibits good mechanical properties, including high hardness and reduced modulus. The supramolecular glass is also recyclable and compatible with various inorganic and organic additives. The study provides a supramolecular strategy for constructing transparent materials from organic components, with potential applications in various fields. The results demonstrate the feasibility of using host-guest molecular recognition to create a bulk transparent supramolecular glass with unique structural and optical properties.This study presents the development of a bulk transparent supramolecular glass using host-guest molecular recognition between methyl-β-cyclodextrin (M) and para-hydroxybenzoic acid (H). The supramolecular glass is formed through noncovalent interactions, including host-guest complexation and hydrogen bonding, which enable high transparency and a bulk state. The material exhibits excellent optical properties, recyclability, compatibility, and thermal processability. The structure of the supramolecular glass includes short-range order (host-guest complexation) and long-range disorder (three-dimensional polymeric network), demonstrating typical glass characteristics. The study highlights the potential of supramolecular glass as a transparent material, with applications in industrial production and scientific activities. The supramolecular glass is formed by the self-assembly of M and H, with the presence of structural water playing a crucial role in the formation of the glass structure. The material is transparent, with high transmittance over a wide wavelength range, and exhibits good mechanical properties, including high hardness and reduced modulus. The supramolecular glass is also recyclable and compatible with various inorganic and organic additives. The study provides a supramolecular strategy for constructing transparent materials from organic components, with potential applications in various fields. The results demonstrate the feasibility of using host-guest molecular recognition to create a bulk transparent supramolecular glass with unique structural and optical properties.