Abstract: To study the influence of gas on the energy index of coal rock bursting tendency, based on the force characteristics of coal containing gas,the gas-solid coupling control equation is established, and the influence of gas on elastic energy index and impact energy index was studied by using COMSOL numerical simulation software. The result shows that with the increase of gas pressure, the plastic strain area in coal sample is enlarged, the plastic strain value increases, the ability of the coal sample to keep the elastic strain energy drops. In the process of deformation and failure, more energy is consumed, and the surplus energy is reduced when the coal sample is completely destroyed, the impact energy index and the elastic energy index are reduced. Gas weakens the rock burst tendency of coal in measuring the bursting tendency and evaluating the rock burst risk of coal containing gas seams, the influence of gas on the burst performance of coal seams should be taken into full consideration.