Present research situation and existing problems together with the prospect ot oevetopment are reviewed, respectively from the direct separation technology and first deoxidization in separation technology. At the same time, the progress of vacuum pressure swing adsorption separation technology for oxygen - contained combed methane gas of low methane concentration is discussed, and it is indicated that the research of adsorbents with high capacity and selectivity is the key of the technology in industrial application.%分别从直接分离与先脱氧再分离技术两个方面，介绍了含氧煤层气分离提纯的研究现状及存在的问题，并指出今后的发展方向。同时，针对低甲烷浓度含氧煤层气的真空变压吸附分离技术的研究进展进行了评述，指出高容量、高选择性吸附剂的研发是该技术工业化应用的关键。
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