广西合山上二迭统长兴组中的火山岩,前人已有报道。最近,笔者发现合山长兴组上部晶屑玻屑凝灰岩和凝灰质砂岩中,找到生物化石,经有关同志鉴定有:(虫筵)Palaeofusulina,放射虫Flustrella,有孔虫Colaniella及棘皮类碎片。合山长兴组中的火山岩和火山沉积岩可分为三类:1.晶屑—玻屑熔结凝灰岩;2.晶屑—玻屑层凝灰岩;3.含生物晶屑凝 Volcanic rocks in the Upper Permian Changxing Formation in Heshan, Guangxi have been reported by predecessors. Recently, I found the fossils and tuffaceous tuff in the upper part of the Changxing Formation in Heshan, where the fossils were found. Palaeofusulina, Flustrella, Colaniella and echinoderm fragments were identified by the comrades concerned. Volcanic rocks and volcanic sedimentary rocks in the Changxing Formation in Heshan can be divided into three categories: 1. Crystal ores - vitrified tuffs; 2. Crystal ores - vitrified tuffs; 3. Biological debris dislodging