Abstract: According to the characteristic of large dip angle, easily broken roof, large amount of float coal in goaf, slow working speed and fire prevention during special mining of 1302S working face in Fucheng Coal Mine, the thought of "prevention first and combination of fire prevention and fire fighting" was identified. Combining with the fire preventing technology of prediction, pressure equalizing, gel injection, nitrogen injection, plugging, grouting, comprehensive measures were taken to interdict the necessary condition of coal spontaneous combustion for CO gas anomalies during special mining and ensure the normal production of 1302S working face.