A new Cs-g-CD-MOF material obtained in colourless large crystals and with a three-dimensional porous structure containing coordinated by cesium ions and g-cyclodextrin was synthesised by an improved vapour diffusion method. The chemical formula of the Cs-g-CD-MOF material was C24H34CsO20, with the I4 space group. Compared with the traditional solvent vapour diffusion method (7 days), this method is advantageous for rapid crystal formation (1 day). Simultaneously, the drug adsortion capacity of g-CD and Cs-g-CD-MOFs for myricetin was compared an...