Abstract: Aiming at the status of intense irritant gases existing in Jinniu Mine, we qualitatively analyze the composition of the irritant gases mainly including H₂S, C₂H₅OH and iso-C₄H₈, without carbonyl sulfur compounds such as sulfur, and excluding amine compounds, and quantitatively analyze the gas concentration of gas samples from intake airflow roadway, return airway, total return airway and drillings. The concentration of H₂S in the drilling reaches up to 437.07×10^-6, however, it has no H₂S in the other places. The detected hydrocarbon compounds show characteristics of high concentration of drillings and low concentration of roadways.