无症状乙型肝炎表面抗原携带者(以下简称携带者)在世界各地广泛存在。其携带率在我国约为1.78～13.9％,人数相当多。近年来不少文献报告乙型肝炎感染与原发性肝细胞癌的发病有一定的联系,故很有必要对携带者进行远期的随访,其目的在于了解其经过及转归,有助于乙型肝炎的防治。我们曾于1980年 Asymptomatic carriers of hepatitis B surface antigen (hereinafter referred to as carriers) are widespread throughout the world. Its carrying rate in China is about 1.78 ~ 13.9%, a considerable number. In recent years, many literatures report that hepatitis B infection has a certain relationship with the incidence of primary hepatocellular carcinoma. Therefore, it is necessary to carry out long-term follow-up of carriers with the aim of understanding its passage and outcome Hepatitis B prevention and treatment. We had in 1980