Abstract: In Huainan coalfield the coal-bearing series are Carbonifererous and Permian. Main structural framework is an EW ramp fault-fold structural belt. This structural belt consists of three secondary order structural belts. The southern Bagongshan-Shungengshan structural belt is an over-thrust belt with S-N direction, and is a model of imbricate fault, it is consisted of thrust faults and thrust sheet. Minglongshan-Shangyao structural belt in north is other over-thrust belt with N-S direction. Fan synclinorium is their middle part. Huainan ramp fault-fold structural belt is the main body of Huaina coalfield, is an important part of foreland deformation belt in northern Dabieshan orogenic belt, it includes the thrust frond and autochthone of dabieshan deformation in its northern. Main slip plane is on the top of crystalline basement. The structural formwork of Huainan coalfield is taken by the pressure with SN direction in Indonisian period.