Abstract: Objective To evaluate effectiveness of intervention trial on report about lawful infectious diseases,and provide foundat ion to promote of the subject.Methods Adopting multistage stratified cluster sampling,4 intervention and 4 control towns were chosen in 2 counties.Results The people who are obliged to report the epidemic can grasp more knowledge about report of statutory infectious disease in the pilot towns than ones in the control towns and the quality of reports in creased significantly.Conclusion Interventiontor eporton lawful infectious diseases is significant effective in towns studied and meet the expectations of the project.