Based on the mine gas geological map compilation of commonly used in the process of gas emission prediction method, combined with the actual status of the gas forecast work of Qingcaitang Mine, Liuzhi special zone of Guizhou province, gas emission prediction methods and practical application were analyzed and compared. For the mine with relatively simple geological condition, underground mine statistical prediction results and the actual gas emission gap was relatively small, which can better guide the mine production safety, prevent gas disaster.