Abstract: In order to accurately master the working status of the brake in the mine hoist, the analytic hierarchy process and the fuzzy comprehensive judgment me thod were applied to the study on the relability judgment of the brake in the mine hoist.With a general design conducted on the judgment system, a judgment system m odel was established.The paper stated the certain judgment process.The case verification was conducted on the brake of a hoist.The results showed that the judgment system could accurately and high efficiently judge the reliability of the brake.The safety status grade of the brake was obtained and the safety hidden danger existed in the brake could be timely found, which could provide the reliable guarantee to the mine safety production.