厌氧菌所致脑膜炎系一种通常未被人们所认识的疾病.本病可并发于破裂至脑室或脑表面的脑脓肿,但多见者系从邻近的感染灶扩散至中枢神经系统.绝大部份病例报导与中耳或副鼻窦的化脓病灶有关.有关细菌性脑膜炎的许多文献一般不包括厌氧菌在内.分离此等细菌需要采用先进的技术,而一般脑脊液培养不常用它,故厌氧菌脑膜炎确切的发病率未能得知,但至少比文献报导的要多.应当注意,除少数情况外.厌氧菌脑膜炎并不是引起厌氧菌败血症的病灶.本文报导4例厌氧菌脑膜炎并加以文献复习. Meningitis, caused by anaerobic bacteria, is a disease that is not commonly recognized as one.The disease can be complicated by brain abscesses that rupture into the ventricles or the brain surface, but the more common are those that spread from nearby infected lesions to the central nervous system. The vast majority of cases are reported to be associated with purulent lesions of the middle or paranasal sinuses.Many literatures on bacterial meningitis generally do not include anaerobes.If the bacteria are isolated, advanced techniques are required, whereas cerebrospinal fluid cultures are not commonly used It is, therefore, that the exact incidence of anaerobic meningitis is unknown but at least more than reported in the literature It should be noted that except for a few cases, anaerobic meningitis is not a cause of anaerobic sepsis. Four cases of anaerobic meningitis were reported and reviewed.