This paper mainly describes the demand and supply situation, production technique, technical progress and application fields of dimethyl ether at home and abroad, and points out that the dimethyl ether has extensive market prospect. 阐述了二甲醚的世界及国内的生产需求状况,二甲醚的生产工艺及技术进展以及二甲醚的应用领域,指出二甲醚具有广阔的市场前景。