Based on small coal mine serious damage of No.9 coal seam in No.1 mining area of Xiandewang Mine, under the threat of CO and other poisonous and harmful gas, by taking three-phase foam grouting pressure, spraying resistance agent, construction of ventilation system, installed tube monitoring system, spraying plugging, and a series of comprehensive research and application of the fire control and prevention technology, which effectively prevented the occurrence of the disasters, guaranteed the safe mining working face in the area, and achieved obvious effect, provided a certain guiding role under the similar conditions of mine fire prevention.