Abstract: It is the first time for Hebi No.9 mine to use the whole coal anchor cable support in 3204 upper coal roadway. However, the original support condition has large deformation, insufficient support strength and poor effect. Therefore, the roof support mode of 3204 lower coal roadway is studied and optimized. The plastic zone development, surrounding rock stress distribution and roof subsidence law of 3204 coal roadway under different roof anchor cable support are analyzed. After comprehensive on-site construction and support cost, it is determined that the anchor cable support is changed from “3-0-3” to “4-3-4”. After optimization, the deformation of 3204 lower coal roadway is significantly reduced. The optimization scheme is applied to the 4101 coal roadway on the working face of Hebi No. 3 mine. The field monitoring data shows that the maximum displacement of roof and floor is 129 mm, the maximum displacement of two sides is 140 mm, and the maximum displacement of roof separation is 20 mm.