In this paper

the research progress of polymer gas separation membrane technology is reviewed from the aspects of nanomaterial doping modification and new preparation technology development. The main methods for improving the interfacial compatibility between different nanomaterials (GO

MOFs

and CNTs) and polymer membranes are summarized. The new progress in the preparation of polymer composite membranes with ultrathin selective layers is introduced. The research focus and development direction of polymer gas separation membrane technology are prospected.