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在对滇西南昌宁—孟连带石炭—二叠纪火山岩和南澜沧江带二叠—三叠纪火山岩的微量元素和稀土元素研究的基础上，划分了岩浆作用类型和岩浆演化系列，探讨了岩浆源区成分特点。昌宁—孟连带玄武质岩浆的演化主要受部分熔融和分离结晶作用控制；这些岩浆可以划分为３个岩浆演化系列：（１）稀土曲线平坦型的洋脊型拉斑玄武岩浆演化系列，其岩浆起源于亏损型地幔；（２）稀土曲线中等富集型的准洋脊型拉斑玄武岩浆演化系列，其岩浆起源于过渡型地幔；（３）稀土曲线强烈富集型的洋岛型碱性玄武岩浆演化系列，其岩浆起源于富集型地幔。南澜沧江带弧火山岩的岩浆成因主要受分离结晶作用控制，也可以划分为３个岩浆演化系列：（１）二叠纪低钾拉斑—中钾钙碱性岩浆演化系列；（２）中南段的晚三叠世低钾拉斑—中钾钙碱性岩浆演化系列；（３）北段的晚三叠世钾玄岩—高钾钙碱性岩浆演化系列
Based on the study of trace elements and rare earth elements in Changning-Menglian Carboniferous-Permian volcanic rocks in Southwest Yunnan and Permian-Triassic volcanic rocks in the South Lancangjiang River, the magmatism types and magmatic evolution series are divided, Source area composition characteristics. The evolution of the Changning-Menglian basaltic magma is mainly controlled by the partial melting and the separation and crystallization; these magmas can be divided into three series of magmatic evolution: (1) the ridge-type tholeiitic basalt magma evolution series with a flat rare earth curve, The magma originated in the depleted mantle. (2) The middle-enriched quasi-ocean ridge tholeiite magmatic evolution series of rare earth curves originated from the transitional mantle. (3) The intensely enriched ocean island alkali Sexual basaltic magmatic evolution series, the magma originated in enrichment mantle. The magmatic origin of the southern Lancangjiang arc volcanic rocks is mainly controlled by the separation and crystallization, and can also be divided into three magmatic evolution series: (1) the Permian low-kala-plagioclase-calc-alkaline magmatic evolution series; (2) Late Triassic low-Kalala-calc-alkaline magmatic evolution series; (3) Late Triassic potash-rock-high-K calc-alkaline magmatic evolution series in the northern segment