Abstract: Decollement structures in Zhadu coal mine are upgrowth,such as nappe,gravitation gliding,bedding and insequent tectonic,which has polyphase and postnappe sliding characteristics.Because of the magmatite intrusion in Late-Yanshan period and the formation of Xikuangshan anticline,gravitation gliding structures are developed at the both wings of the anticline.The structures in compressed front track Jinpanlun fault and south zone of Jiyun fault,which makes a complicated structures in south zone,but the structures in north zone remain simpler.So it causes different structure phenomenon in its south and north zone.