Abstract: The 010202 workface of Baijigou Mine is threatened by high temperature fire area of surface slag table and spontaneous combustion of coal seam and overlying goaf float, and the goaf under the ground fissures has a serious air leakage which will also aggravate coal combustion and is easy to cause fire coupling accident. So, this paper, according to the detection technology of fire resource in goaf and beam tube theory, provides theoretical guidance for the gob fire extinguishing. In order to improve the effect of overlying gob fire extinguishing so as to introduce the theory of composite slurry fire-fighting, namely adding related additives on the traditional goaf grouting fire to improve viscosity of slurry and moisturizing effect to find out the best composite slurry which is on the basis of experiment, the rational plan about fire prevention measures of 010202 working face is proposed to make sure the safety of working face production according to the temperature and concentration of harmful gases which are monitored by gob tube to verify fire-fighting effect of composite slurry which is under the best concentration and viscosity.