Abstract: Jiaonan orogenic belt is mainly composed of the synorogenic bimodal granite of the Upper Proterozoic Subera, besides a little of pre orogenic mantle derived plutonic rock and post orogenic alkaline granite. The occasional exposed stratigraphic remains can be divided into four types:late Archaeozoic Jiaodong Group, lower Proterozoic Jingshan Group and Fenzishan Group, and Sinian Pengheshi Formation complex. The belt experienced a series of metamorphic faces from high pressure to middle and low pressure in stages, and essential structural features are ductile shear belt, dome and arc structure. Jiaonan orogenic belt can be divided into three segments: the north and middle segments,which belong to south margin of North China Plate, and the south segment a part of the north margin of Yangtze Plate.