The accurate prediction of coal spontaneous combustion zone is the precondition for the coal fire prevention. In this study, we prevent the coal spontaneous combustion on the basis of oxygen concentration and oxidation time. 10% of oxygen concentration (volume percent) is used to determine the easily coal spontaneous combustion zone and the quick advancement is used to avert the coal fire. A three-dimensional, steady flow, CFD modeling method based on realistic parameters of seepage, ventilation and working face is established and the preliminary modeling results of the spontaneous combustion zone are compared with the pipes observation for validating and amending the parameters of CFD model. The easily spontaneous combustion zones under the conditions of different air volume are quantitatively evaluated by the amended model. Simultaneously, the minimum advancing rate for averting the coal fire is determined, and the effect of accelerating advancement for the coal fire prevention is examined as well. The approach of accurate prediction is also applicable to other similar gob areas