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利用13 C NMR 谱监测了乌洛托品（HA）在 N2 O5／HNO3和 N2 O5／HNO3／CH2 Cl2硝化体系中硝解反应的历程，根据实验13 C NMR 谱和计算13 C NMR 谱的解析结果，并结合 HA 硝解反应过程中可能存在中间体和副产物的13 CNMR 理论计算结果，提出了硝解历程中可能存在的中间体与副产物的结构，推测了 HA 在 N2 O5／HNO3体系中的硝解历程为：HA 首先与两分子 HNO3结合生成乌洛托品二硝酸盐（HADN）；HADN 再经环三亚甲基硝胺母体逐步降解为黑索今（RDX）。“,”The reaction mechanism for the nitrolysis of hexamethylenetetramine (HA)in the nitrating system of N2 O5/HNO3 and N2 O5/HNO3/CH2 Cl2 was monitored by using 13 C NMR spectroscopy.Based on the analytical result of the 13 C NMR spectrum,and combined the result of calculated 13 C NMR of the possible intermediates and by-products in the nitrolysis reaction process of HA,the structures of the possible intermediates and by-products in the nitrolysis reaction process of HA were presented.A possible mechanism for the nitrolysis of HA in the nitrating system of N2 O5/HNO3 was speculated.In the first step,hexamethylenetetramine dinitrate (HADN)was formed via one molecular HA and two molecular HNO3 .And then,HADN gradually degrades to RDX via cyclotrimethylen enitramine matrix.