Abstract: A separation membrane based on the environmental protection concept was developed in this work. In this membrane， covalent organic framework （COF） membrane materials presented unique advantages. At present， the studies on the two-dimensional structure of COF materials are relatively mature； however， there are few studies on three-dimensional COF materials （3D-COFs）. This paper introduced the synthetic and post-modification methods of 3D-COFs membrane materials and discussed the specific application of 3D-COFs membrane materials for CO2 capture. Finally， the future development direction of 3D-COFs membrane materials was prospected.

Key words: three-dimensional covalent organic frameworks, synthesis method, post-modification method, gas separation, carbon dioxide capture