Abstract: The high drainage roadway of 171302 island coal face in Liuzhuang Coal Mine is taken as research object. Based on roadway damage characteristics at the scene, three key factors affecting the roadway stability have been analyzed. Based on numerical simulation, the roadway stress and deformation features under two cases are compared. The results show that roadway above island coal face is easy tilting and sinking to mined side, the surrounding rock is asymmetry large deformation, the maximum vertical stress concentration and position have respectively expanded by 73.2% and doubled in roadway sides, and the maximum horizontal stress concentration have respectively reduced by 14.5% and 54.8% between roadway roof and floor.