一种具有气体分离层的气体分离膜,气体分离层内含有聚苯并噁唑(PBO)树脂,其中聚苯并噁唑溶有1%(质量分数)或更多的四氢呋喃、氯仿、甲基乙基酮、N-甲基吡咯烷酮当中的任何一种溶剂,分离温度为30℃,本专利包括采用上述气体分离膜的气体分离模块、气体分离装置和气体分离的方法。 A gas separation membrane having a gas separation layer containing a polybenzoxazole (PBO) resin in which polybenzoxazole is dissolved in 1% (mass fraction) or more of tetrahydrofuran, chloroform, methyl Ethyl ketone, and N-methylpyrrolidone at a separation temperature of 30 ° C. The patent includes a gas separation module, a gas separation device, and a gas separation method using the gas separation membrane.