散发性病毒性脑炎近年来已逐渐引起人们的注意。虽在其临床表现、分型、诊断和鉴别诊断等方面有不少报导,但病理资料却较少,目前尚缺乏病毒分离的确实证据。我们自1979年起对临床诊断为散发性病毒性脑炎的8例患者做了脑穿刺活检,并认为脑穿刺活检对临床诊断很有帮助,特报告如下: In recent years, sporadic viral encephalitis has gradually attracted people’s attention. Although there are many reports on its clinical manifestations, typing, diagnosis and differential diagnosis, but the pathological data is less, there is still a lack of evidence of virus isolation. We have performed brain biopsy on eight patients with clinically diagnosed sporadic viral encephalitis since 1979 and believe that a biopsy of the brain is helpful in clinical diagnosis, as follows: