Exploration on oilgas reservoir of the Carboniferous volcanic rocks made great successes in recent years. In this area，the types of volcanic reservoir of Batamayineishan Formation are diverse，including lavas，such as basalt，andesite，rhyolitea et al.〖KG-*5〗，pyroclastics，as volcanic agglomerate，breccias tuff and different sedimentaryvolcanic rocks. The volcanic rocks characterize multiple stages and intermittent eruption. The complete cross section of Batamayineishan Formiaton are grouped at least three stages，with sedimentary interbeds as discontinuity surface. The volcanic rocks are favorable reservoirs between two interbeds. The types of ancient volcanic edifices are various. The regions nearby volcanic conduit，riched in pyroclastics，are advantage zones for reservoirs. Combined data of isotopic chronology and fossil evidence，it is certain that the time of volcano eruption is early Carboniferous. The stratas of Cauboniferous in the study area from below is Tamugang，Dishuiquan and Batamayineishan Formation of lower Carboniferous and Shiqiantan Formation of upper Carboniferous.