在法医丁作中，经常遇到因吸入有毒气体而死亡的案例。但氮气致死的案例未见有文献报道，笔者在工作中曾遇1例因工业氦气泄露致工作环境（铸铁罐）充满氮气，最终因缺氧窒息而死亡的案例，现报道如下。案例：某男，34岁，某日在清理铸铁罐内的残渣时死亡。情况调查：死者所在班 In the forensic practice, often encountered cases of death due to inhalation of toxic gases. However, no case of nitrogen death reported in the literature, I have encountered in the work of a case of industrial helium leaks caused by the working environment (cast iron cans) filled with nitrogen, and ultimately died of hypoxia and asphyxiation cases are reported below. Case: A male, 34 years old, died on the day of cleaning up the residue in a cast iron can. Survey: the dead in the class