The Longgang volcano is one of the best-developed and preserved monogen et ic volcano clusters in the main land of China. The monogenetic volcanism produced more than 100 volcanoes composed of scoria cone, tephra sheet, lava flow, maar, and so on .The monogenetic volcanism controls the structure and scope of the volcanoes in the Longgang volcanic terrain.Analysis of such volcanism is of significance in r educing volcanic disasters in the study area.