Abstract: It is technical problem for fire prevention and control of “two lines, two lane, two points, two districts” in the extremely thick spontaneous combustion coal seams. Since it used comprehensive mechanization caving methods to exploit extremely thick spontaneous combustion coal seams, fire risk was serious for “two lines, two Lane, two points, two districts”. By using comprehensive fire prevention technologies, such as pressure balancing, filling, plugging, grouting, nitrogen injection, drainage concentration control, negative pressure and so on, to control spontaneous combustion risks, it had formed a set of improved, practical and effective integrated control techniques, which had been applied and expanded, provided technical support for fire prevention under similar coal seam mining conditions.