Abstract: The determination of sensitive index of coal and gas outburst prediction is of great significance to the safe mining of outburst coal seam.The limitations of the traditional method of determining the sensitivity of indicators in the new era are analyzed; a statistical analysis method for determining the sensitive index of outburst prediction is put forward, and the geological conditions suitable for each index are found out, and its application scheme is given.The application in Kailuan mining area shows that the initial velocity of gas gushing from drilling index is suitable for the typical outburst coal seam, the gas desorption index is suitable for outburst coal seam dominated by gas, the index of drilling cuttings quantity is applicable to the outburst coal seam dominated by stress; the controlling factors of coal and gas outburst in Kailuan mining area are mainly high stress, followed by high pressure gas, the sensitive index of outburst prediction is drilling cuttings and gas desorption index.