In order to study the rule of the amount of gas emission prediction, the commonly used methods in deformation monitoring data process are analyzed. Combined with amount of mine gas emission data in Guqiao Coal Mine, gray GM(1,1) model and curve fitting theory are applied to analyze the amount of gas emission prediction of No. 1116(1) working face. The prediction results can be analyzed, verified and proved well. F-test is used to analyze the relativity of the prediction results, and the basic conclusion is drawn to rational selection of prediction model.