Abstract: Objective  To explore the relationship between sleep duration and self-reported diabetes in the middle-aged and old residents in Hebei Province. 
Methods  According to the multi-stage cluster random sampling method, survey subjects were selected from Hebei Province. Questionnaire surveys and physical examinations were conducted. The middle-aged and old residents aged 45 and above were selected and the χ2 test was used to analyze the data. The relationship between the sleep duration and self-reported diabetes was analyzed by multivariate Logistic regression analysis. 
Results  Sleep duration of 6-8 h/d was associated with the risk of diabetes(OR=0.575，95%CI：0.407-0.813). The women,people in rural area and middle-aged and old people aged 45-59 years with moderate sleep duration(6-8 h/d) were at risk of diabetes 0.486, 0.472 and 0.432 times that of those with insufficient sleep duration(＜6 h/d)respectively(95%CI：0.327-0.724, 95%CI：0.304-0.733, 95%CI：0.221-0.844). 
Conclusion  Sleeping duration of 6~8 h/d can reduce the risk of diabetes in middle-aged and old residents in Hebei Province.

Key words: diabetes mellitus, sleep duration, middle-aged and old