Abstract: The article introduced the danger of mine water briefly, started with the original water disaster appraisal method, analysis the shortcoming and deficiency of the original method, seek for a more objective quantitative appraisal method-analytic hierarchy process method. Carry on dangerous appraisal of mine water leakage accident while regarding tunneling face as an example. The result shows that the analytic hierarchy process method can reflect mine reality more objectively, and offers a theoretical foundation for the water disaster prevention and safety production.