3405 roadway of Dayang Mine affected by 3404 working face mining recovery, with asymmetry large deformation, difficult maintain and multiple repair, the original support parameters cannot meet the needs of the current geological condition. Pressure relief was conducted in roadway, plans of roadway surrounding rock stress and damage distribution were compared by FLAC3D calculation, the reasonable pressure relief parameters were set, with industrial test, realizing the optimization of roadway support.