Though the urban district of Jiaxing City has been one of the high incidence areas of viro-hepatitis in Zhejiang province, there is no systematic research study either on its serology or its epidemiology. A total number of 150 cases from Jiaxing urban district, admitted in Jan. Dec., 1993, was reported in this paper. Among them: HA 45.33%, HB 51.33%, HC 5.33%, HD 2% and HE 8.67%, including single infection, mixed infections and super-infection of different individuals. Sex, age, profession, seasonal distribution and other epidemiologic characteristics were discussed for the parpose of scientific preventive measures and preventive stratagy development.