Abstract: Selected the expansion energy of initial released gas as dependent variables. It chose the representative data of 20 groups from measured data of expansion energy of initial releasing gas in recent years, and used regression analysis method and SPSS software to analyze the data. It verified that the gas pressure, initial velocity of gas diffusion, coal firmness coefficient and expansion energy had a relationship. It established the prediction model, analyzed and verified the prediction results. The prediction accuracy could satisfy the need of engineering, and illustrated it was feasible for the use of stepwise regression analysis on the expansion energy prediction of initial releasing gas.