COFs resin in ultra-pure gas purification, a covalent organic frame material composed of light elements, has the characteristics of uniform pore, adjustable size, customized function, high specific surface area, high porosity, low skeleton density and high stability. As a super adsorbent, its performance is far superior to activated carbon, and it can effectively adsorb gas molecules to achieve purification. In addition, COFs resin also has fluorescence sensing function, suitable for gas analysis and detection. Because of its excellent adsorption properties and diverse applications, COFs resin has broad prospects in gas purification, sensing and other fields.