慢性乙型活动性肝炎(简称慢活肝,CAH)可呈隐匿经过,出现临床症状时已是肝硬化失代偿期,这是临床医生所熟悉的。隐匿型慢活肝也可急性起病似急性肝炎。由于肝穿活检开展日益广泛而已为临床所注目,但多数临床医生仍未对此有足够的认识,这类患者往往因无肝病史而有典型急性肝炎的发病经过而被误诊为急性肝炎。临床上二者如何鉴别,目前未见较系统的文献介绍。本文试图从病史、流行病学史、临床表现和实验检查等方面谈谈自己的肤浅看 Chronic active hepatitis B (referred to as slow-living liver, CAH) can be hidden after the clinical symptoms of cirrhosis already decompensated, which is familiar to clinicians. Concealed slow liver can also acute onset of acute hepatitis. Due to the growing prevalence of biopsy of liver biopsy has attracted clinical attention, but most clinicians still do not have enough understanding of this type of patients are often due to no history of liver disease and the pathogenesis of a typical acute hepatitis was misdiagnosed as acute hepatitis. Clinically how to identify the two, there is no more systematic literature. This article attempts to talk about his superficiality from the aspects of history, epidemiology, clinical manifestations and laboratory tests