1993年8月中旬,德州卷烟厂发生一起烟叶自燃事故,报废云南机中二烟叶586包(29300kg.因当时未见明火,卷烟厂弄不清是霉变还是火灾,故未报警.8月21日,笔者到事故现场进行了勘查和调查,并分析认定为烟叶炭化事故.现将事故过程、现场情况、分析根据及防止烟叶自燃的对策简述如下. In mid-August 1993, a cigarette plant spontaneous combustion occurred in a cigarette factory in Texas, and 586 bales of cigarettes were scrapped in Yunnan (29,300 kg.) No alarm was reported because the cigarette factory did not know whether it was mildew or a fire. Day, the author went to the scene of the accident investigation and investigation, and analysis identified as carbonization of tobacco leaf accident.Currently the accident process, the scene, analysis and prevention of tobacco leaf spontaneous combustion measures outlined below.