Abstract: Home and abroad research status of fire prevention and extinguishment technology at slice mining work face of steep-inclined and extremely thick coal seam is analyzed.Combining with external factors of working face spontaneous combustion,corresponding measures are proposed.Only adopting comprehensive technical means and using them reasonably,truly effective prevention and control the coal spontaneous combustion of such working face can be achieved,which is the development trend of fire prevention and extinguishment for such working face.