Abstract: The method of gas membrane separation is an important technology in the separation of gas pair CO2/CH4.This paper introduces generally the development of the important polymeric materials of gas separation membrane at home and abroad in this field，and recommends specially polyimide (PI) and facilitated transport membranes. Moreover some meaningful improvement of membrane materials is proposed to produce membranes with better performance.

摘要： 气体膜分离法正在成为分离CO2/CH4体系的一项重要技术。概括介绍了该领域国内外的主要高分子膜材料的研究进展，重点介绍了聚酰亚胺膜和促进传递膜材料，并提出了膜材料的改进方向，以期为制得更好的膜提供帮助。