Abstract: In view of safety the elementary and industrial analyses of coal samples were conducted, a systematic experiment was performed to investigate the minimum ignition temperature (MIT) of Zhangcun and Changcun meager-lean coal in a G-G furnace, and the effect of dust concentration, spray-air pressure and dust particle size on the MIT was analyzed. The results show that the TIM increases with the decrease of dust concentration and the increase of spray-air pressure and dust particle size. A linear regression was conducted and the functional relationship was found, which can afford reference for the security of meagerlean coal's industry application.