Abstract: Aiming at the problem that it is difficult to determine the safety and stability of roadway beyond design service life, we analyze the disasters and its formation mechanism of permanent mine tunnel, and summarize the methods of field test for all kinds of tunnel disasters. Taking Ningtiaota Coal Mine S1210 working face as an example, we introduce general procedure for evaluating the stability of roadway by analytic hierarchy process. On the basis of this, we propose the methods for tunnel maintenance and reinforcement, and use numerical simulation analysis to verify the effectiveness of control scheme.