The Early and Middle Carboniferous volcanic rocks in Awulale area are mainly of alkaline series, with a small part belonging to calc-alkahne series;rare earth elements show cliaracteristics of kohalaite and K-high andesite in the island arc and active epicontinental region; trace elements exhibit features of continental island arc volcanic rocks,It is thtis proved that this area was in an intra- arc environment in Early and Middle Carboniferous. Permian vol-canic rocks are of alkaline series: rare earth eiements and trace elements mani-fest features of intra-plate alkaline basalt.The rock assemblage resembles that of Kenya rift valley, being at the early stage in valley evolution. The Late Carboniferous Begeda tectonic movement led to the change of this area from island arc to rift valley and also to the tranformation of Tianshan Mountains from plate framework to intraplate framework.