云南腾冲地区火山群,是我国火山机构保存最完好的新生代火山群之一。区内二十多个形态完整的火山锥呈南北向展布,火山口附近千姿百态的火山弹、火山角砾及火山渣、浮石岩等,构成美妙奇特的火山景色。火山活动造成大量热泉,使该地区成为我国开发利用地热最理想地区之一。区内火山熔岩在岩石学和岩石化学特征上均有独特之处,本文重点讨论它的特点。 Volcano Group in Tengchong, Yunnan Province, is one of the most well-preserved Cenozoic volcanic groups in China. More than 20 morphologically complete volcanic cones are distributed in the north and south direction. Various types of volcanic bombs, volcanic breccias, volcanic slag and pumice rocks near the crater form a wonderful and unique volcanic landscape. Volcanic activity has caused a large number of hot springs, making the area one of the most ideal areas for developing and utilizing geothermal energy in our country. The volcanic lava in the area has peculiar petrology and petrochemical characteristics. This article focuses on its characteristics.