Abstract: ObjectiveTo analyze the repeated reporting of viral hepatitis B in Fujian province, 2004-2007, and suggest the control measure. MethodsThe report cards from Disease Information Reporting System were analyzed by SAS 9.0. ResultsThe repeated cards were judged by the international codes of patient name, sex, disease and current address, and the difference on age which was 2 years old. There were 70, 149, 515 and 716 repeated cards found in each year during 2004-2007, which accounted for 0.18%, 0.45%, 1.22% and 1.21% of the total cards respectively. There were 3513, 2300 and 868 cards which had been reported in other year(s) respectively in 2007, 2006 and 2005, theses cards accounted for 6.07%, 5.43% and 2.64% of the total repeated cards respectively. ConclusionThe annual repeated report cards increased year by year, and the repeated reporting for more than 1 year influenced the truth of the reported incidence rate. It is necessary to optimize the function of checking repeated reporting, revise the standard of judging repeated cards, establish management system of the cases reported for more than 1 year and conduct the training on the filling of the report card.