0　引言　一氧化氮(NO)作为一种新型神经介质,在神经系统中具有两种主要作用,一方面作为神经介质在传递信息中起作用,另一方面在神经细胞中毒中起作用.我们通过观察大承气汤对实验性脑出血时脑组织中NO含量的影响,探讨大承气汤是否对脑出血模型具有神经保护作用.1　材料和方法1 0 INTRODUCTION Nitric oxide (NO), as a new type of neural mediator, has two major functions in the nervous system. On the one hand, it acts as a neural mediator in the transmission of information, and on the other hand, it plays a role in nerve cell poisoning. Observe the effect of Dachengqi Decoction on NO content in brain tissue during experimental cerebral hemorrhage and investigate whether Dachengqi decoction has neuroprotective effect on cerebral hemorrhage model.1 Materials and methods 1