Abstract: Due to the influence of spontaneous combustion in 12 coal gob,22305 working face in Bulianta Coal Mine had to be closed.The governance effect of high temperature area in 12 coal gob must be evaluated to ensure the safe mining of surplus working faces in Sanpan area. The spontaneous combustion situation and governance process of 12 coal gob was introduced,the variation trend of spontaneous combustion indicator gas in the high temperature area was analyzed from October 2012 to September 2013,and the temperature was also tested. The evaluation conclusion showed that the high temperature area in 12 coal gob was in a state of suffocation, and it would not pose a threat to the surplus working faces in in Sanpan area. Finally the subsequent control measures of the original high temperature area were given.