ObjectiveTo investigate the characteristics of measles epidemic in Taizhou City in the first half  year of 2011.MethodsDescriptive epidemiological method was used to analyze measles prevalence.ResultsA total of 313 suspected measles cases were reported in the first half year of 2011, 106 (17.99/1 000 000) of which were confirmed cases,the confirmed cases increased by 39.47% compared with 76 cases of 2010, showing a high incidence level. Peak incidence occurred earlier than in 2010. The ratio of male to female patients was 1.79:1, age concentrated on children ≤1 year and adults ≥ 25 years; with unknown or without history of measles vaccination; 45.28% of measles cases were healthcareassociated infection.ConclusionThe incidence of measles in the first half year of 2011 was higher than that during the same period of 2010, it is necessary to strengthen routine immunization (Expanded Programme on Immunization) and supplementary immunization for small age children and adults over 25 years old.