Abstract: ObjectiveTo determine the prevalence of diabetes mellitus,rates of awareness,treatment and control of diabetes mellitus(DM)in Beijing citizens.MethodsTotally 10 054 subjects were randomly selected from different districts of Beijing in 2007.DM was diagnosed according to WHO criteria of 1999.ResultsThe prevalence of DM was 11.0% (11.0% for male and 10.9% for female,P>0.05).The prevalence of DM was the highest in urban residents and low est in suburban residents(P<0.001),and increased with age(P<0.001).The rate of awareness,treatment,and control of DM was 62.0%,55.2%,and 32.2%,respectively,with no gender difference(P>0.05),but increased with age and education level of the residents(P<0.001).ConclusionThe prevalence of DM is high among the residents in Beijing,but the rates of awareness,treatment,and control are low.The education,screening,and treatment of DM are urgently recommended.