PEBA/ EPH Thermo-reversible gel membranes were prepared by thermally induced phase sepa-ration( TIPS)method. The physical and chemical structure and CO2 / N2 gas permeation properties for these membranes were characterized as a function of EPH content. The results showed that PEBA/ EPH gel membranes have excellent mechanical property and high permeability. With the addition of EPH,the crystallinity and melting temperature of the membranes decrease obviously,which result in a significant in-crease in permeability coefficients for both CO2 and N2 . Moreover,the ideal selectivity of CO2 / N2 increa-ses since the preferential adsorption of EPH. When the EPH content increased from 0 to 60% ,CO2 perme-ability improved from 234 to 1 040 barrer and the selectivity of CO2 / N2 reached from 22. 5 to 40. 5.%通过热致相分离法制备了具有高气体渗透性能的聚醚共聚酰胺/乙二醇苯醚凝胶膜（PEBA/ EPH），并探讨了 EPH 含量对其物理化学结构及 CO2/ N2渗透性能的影响。结果表明，PEBA/ EPH 凝胶膜具有良好的力学性能及优异的气体渗透性能，EPH 的添加使得膜结晶度及熔融温度下降，从而 CO2、N2在凝胶膜内的渗透系数显著增加。同时，由于 EPH 对于 CO2具有优先吸附性，凝胶膜的 CO2/ N2选择性也相应增加。当 EPH 含量从0％增加到60％时，凝胶膜的 CO2渗透系数由234 barrer 增加到1040 barrer，CO2/ N2的气体选择系数从22.5增加到40.5。
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