考察了甲醇／低碳烷烃在ＺＳＭ－５分子筛上偶合转化为芳烃和低碳烯烃的反应过程。对特定的催化体系，存在一最佳原料配比，使反应的热效应近似为零。偶合转化时甲醇完全转化，低碳烷烃的转化率低；不同催化剂上偶合转化产物分布差别极大，与ＨＺＳＭ－５相比，Ｇａ改性后可获得较高的芳烃和低碳烯烃收率。 The reaction of methanol / lower alkane on the ZSM-5 molecular sieve to convert into aromatics and lower olefins was investigated. For a particular catalytic system, there is an optimal ratio of raw materials, so that the thermal effect of the reaction is approximately zero. Methanol was completely converted during the coupling conversion, and the conversion of lower alkanes was low. The distribution of the coupled conversion products varied greatly on different catalysts. Compared with HZSM-5, higher yields of aromatics and lower olefins were obtained when Ga was modified.