Abstract:dump, the influences of season, humidity and wind speed on the spontaneous combustion wereanalyzed based on the monitored concentration data of CO produced during the spontaneous combustion.The results show that the spontaneous combustion of the coal gangue dump is strong in spring and win⁃ter, but gentle in summer and autumn. With the increase of air humidity, the spontaneous combustionexperiences a gentle period, an intense period and a gentle period in turn. When the air humidity rea⁃ches 32%, the spontaneous combustion is the intensest. With the increase of wind speed, the spontane⁃ous combustion of coal gangue dump experiences an intense period, a gentle period and an intense pe⁃riod in turn. When the wind speed is less than 1.88 m/s or greater than 2.76 m/s, the spontaneouscombustion of coal gangue dump is in the intense period. When the wind speed is 1.88~2.76 m/s, thespontaneous combustion is in the gentle period. Close-