The Zhangyuan structure belt is a regional ultra-crust faulting belt intensely superimposed by Indosinian-Yanshanian thrust-strike slip brittle fault, characterized by NW-SW-trending ductile structural deformation mingled with Neoproterozoic mafic rocks.This structure belt experienced multiple deformations. The main event was the southward thrusting ductile deformation occurring in relatively weak position within internal layers of the Earth, which resulted from arc-continent (Yangtze Block) collision during Jinningian period. Mafic rocks in theZhangyuan structure belt, such as pillow-massive mafic lava, gabbro, diabase and etc.are associated closely in the space, and formed in a slowly spreading ridges environment of continental marginal ocean basin. They are characteristic of initial oceanic crust mafic rocks, suggesting that they are part of the western extension of ofFuchuanophiolite belt in southern Anhui province. The Zhangyuan structure belt and Neoproterozoicvolcano-sedimentation formation distributed on both sides of the belt formed in structure- sedimentary environment related to continental margin and tectonic plates. To the south was sedimentary system of rifting sea basin, and to the north was the sedimentary system related to the continental margin volcano arc. Therefore, the Zhangyuan structure belt is characteristic of abyssal-bathyal sedimentation. The Zhangyuan structure belt connects the Fuchuanophiolite belt in northeast and Jingdezhen-Yifeng deep-large fault in southwest, and constituted an important part of subduction- collision collaged belt of continental margin oceanic basinin the northern margin of Jiangnanorogenduring Early Neoproterozoic, which isrepresented by the Fuchuanophiolite belt.