Objective To study the relationship between survival rate and pathogen,subtype,stage,delivered methods of 55 patients with severe hepatitis during late period of pregnancy.Methods Clinical data of 55 cases with severe hepatitis during late period of pregnancy was analyzed retrospectively.Results The incidence of hepatitis B was highest in patients with severe hepatitis during late period of pregnancy (84.5%).In subtypes,the incidence rates of chronic severe hepatitis,acute severe hepatitis and subacute severe hepatitis were 83.6%,5.5%,10.9% respectively(P