Abstract: This paper analyzes the research and application status of gas early-warning indicators in the working face area and proposes the research on gas early-warning indicators in the working face based on the monitoring system. Based on the idea of inversion, the feasibility of using explicit monitoring information to reverse the change trend of natural factors and mining technology factors is pointed out. Based on the analysis of the relationship between gas emission and possible influencing factors, 13 kinds of gas early-warning indexes of 3 types were set up for tunneling face, and the basic data granularity of 13 kinds of indexes was proposed. Taking the gas analytical early warning index as an example, the validity and accuracy of the gas analytical early warning index are verified in combination with a driving face. It is concluded that the gas analysis and early warning indicators are in good agreement with the danger degree of gas on site and have strong applicability on site.