Various endocrine disturbances are often observed in the patients with liver cirrhosis. We focused this paper on the sex hormones. Clinical features of male cirrhotic subjects are feminization(gynecomastia etc) and hypogonadism(testicular atrophy, reduced fertility, loss of libido, impotence etc). Chief abnormalities of sex hormones are a decrease in serum testosterone levels and an increase in serum estrogen levels accompanied by an increase in ratio of estrogen to testosterone in the patients with severe liver cirrhosis associated with the severity of hepatic dysfunction. Hyperestrogenization may be related with feminization of male cirrhotic subjects, whereas hypogonadism is the result of alcohol abuse per se, rather than the indirect consequence of liver cirrhosis.