Abstract: Using extrusion reinforcement theory to analyze roadway extrusion reinforcing body thickness along the axial and tangential direction, this paper puts forward that the rectangular roadway also should pay attention to the uniformity of extrusion reinforcement structure, especially in coal roadway that surrounding rock is easily damage. Extrusion reinforcement uniformity is not only reflected in roadway extrusion reinforcing body thickness which is close to axial and tangential direction, but also try to make extrusion reinforcement area formed by each anchor overlapped and form the common bearing structure.