By combining the practice s of deep mine mining in Changguang Mine field and using the Universal Distinct Element Code 3.0 3.0) numerical computing method, the distribution characteristics of deformation field and stres sfield as well as the surrounding rock deformation regularity of soft rock roadway are analyzed under extremely complicated geological conditions, a technical principle of bolting to control the surrounding rock of roadway is put forward. And also using a dynamic control for surrounding rocks de signing method, the supporting parameters and implement plan are rationally determined. The experimental tests have obtained a good controlling re sult of surrounding rock.