Abstract: Using the viewpoint of geomechanics,the geological structure in Yangquan Mining Area is analyzed,and the structural system,the structure evolution and its formation mechanism are discussed.It is considered that the structural framework in Yangquan Mining Area is formed by the composition of both east-west directional structure zone and Neocathaysian structure zone,and within the mining area,the magmatic intrusive body in the base of coal measures is the mainstay for the north south directional torque of Neocathaysian system.