Abstract: Objective　The study was conducted to evaluate the epidemiologic characteristics of influenza in Sichuan, providing evidence for the development of preventive intervention. Methods Embryonated egges and MDCK cells were used for viral isolation，and hemagglutination inhibition test performed to identify the isolates. Epidemiological, etiological and surveillance analysis was based on the data of influenza-like illness(ILI) and influenza cases collected through the national diseases reporting management system, public emergency reporting system and influenza surveillance information system. Results　In Sichuan province, annual declining trend of ILI cases was present without significant clinic visiting peaks. A total of 9 influenza outbreaks were reported, distributing mainly in March and April, and in rural elementary and middle schools. As a result, 100 isolates of influenza virus were collected from 879 ILI samples, the isolation rate being 11.38%. The predominant strains were of type H3(52%) and B (45%). Conclusion　It is required to strengthen the flu surveillance and research on the antigen variation of influenza viruses. Meanwhile, considerations should be given to epidemic surveillance in countryside elementary and middle schools.