Abstract: ObjectiveTo explore the pattern and influencing factors of sleep among adult residents in Guizhou province and to provide scientific evidences for improving sleep quality of the residents.MethodsA questionnaire survey was conducted among 9 280 adult residents at the age of 18 years and older selected with multistage stratified random sampling in Guizhou province.ResultsThe average sleep time of the residents was 7.90±1.34 hours; the urban residents had a significantly less average sleep time than rural residents(7.77±1.34 vs. 7.96±1.34 hours)(t=-6.478,P=0.000) and the average sleep time of the male residents was not significantly different from that of female residents(7.89±1.30 vs. 7.91±1.37 hours)(P>0.05).The average sleep time for the residents at the ages of 18-24,25-34,35-44,45-54,55-64,and ≥65 years were 8.17±1.11,8.12±1.13,7.95±1.22,7.80±1.34,7.67±1.50,and 7.66±1.71 hours and the average sleep time was negatively correlated to age(r=-0.135,P=0.000).Unconditioned logistic regression analyses showed that living in rural area,aged ≥25 years,being a mental worker,and alcohol drinking were the risk factors for insufficient sleep time; with the education of junior high school or higher and frequent physical exercise were protective factors of sufficient sleep time among the residents.ConclusionThe adult residents in Guizhou province have a less sleep time and age,education level,occupation,alcohol drinking,and physical exercise are major influencing factors of sleep quality in the residents.