The Upper Devonian and Carboniferous can be divided into Donghetang Formation, Ganmulike Formation, Bachu Formation , Kalashayi Formation and Xiaohaizi Formation. The geologic time of Donghetang Formation and Ganmulike Formation belong to Late Devonian, the geologic time of Bachu Formation is Early-Middle Tournaisian of Early Carboniferous, the geologic time of Kalashayi Formation is from Late Tournaisian to Bashkirian, the geologic time of Xiaohaizi Formation is from Late Bashkirian to Moscovian. There are terrigenous clastic rocks and carbonate rocks. There are 5 facies, i.e. fluvial facies, delta facies, littoral facies, neritic facies,carbonate platform facies , platform edge facies, and 12 subfacies and 33 microfacies.There were 4 trangressions from Late Devonian to Carboniferous, and the trangression was from east to west, and  increased gradually. Because of a lot  of  terrigenous  supply, the sedimentary facies were mainly littoral facies and nertic facies during Donghetang Age.  From Bachu Age to Xiaohaizi Age, the trangression area increased, and the sedimentary facies were mainly carbonate platforms.