Abstract： Objective To investigate the control rate and influence factors of glycolated hemoglobin A1C(HbA1c) of type 2 diabetes in Baoding city community.Methods A cluster-randomized study was conducted and three communities were selected randomly.The study involved all of people aged 45 years old and above in the three communities.The type 2 diabetic patients diagnosed before,were recorded through the cross section study.Then the questionnaire was finished.All diabetic plasma HbA1c was determined by HPLC method.Results Eighty-seven patients with HbA1c≤7％ were only 18.6％ in all diabetic patients.As the plasma level of HbA1c increased,occurrences of macroangiopathy and microangiopathy were both increased,by the trend test.Logistic regression analysis showed that therapeutic measures and knowledge about diabetes were main influence factors of achieving the hemoglobin Alc target of ＜7％ in type 2 diabetes.Conclusion There were low HbA1c control in diabetic patients of Baoding community,and knowing diabetes well and receiving insulin treatment might decrease HbA1c level apparently.