Abstract: ObjectiveTo explore the prevalence and influencing factors of sub-health among residents of Jiangmen city for making effective health promotion strategy.MethodsPhysical examination and questionnaire survey were conducted among health physical examinees randomly selected at Physical Examination Center of Jiangmen Municipal Center for Disease Control and Preveation from October 2010 to May 2011.ResultsA total of 2 136 persons(36.23%)were sub-health(84639.61%with physiological sub-health,62329.17%with mental sub-health,and 66731.22%with social sub-health).Logistic regression analyses showed that female,frequent illness,working time longer than 12 hours per day,alcohol consumption,irregular diet structure,and unreasonable diet were risk factors of sub-health and at age of 30-49 years,occupation other than worker,education level higher than junior middle school,personality of mixed type,working time of 5-6 hours per day,good psychological status,and social adaptability were protective factor of sub-health in the residents of Jiangmen city.ConclusionA higher prevalence of sub-health is detected in the population of Jiangmen city. Disease prevalence,physical activity,working hours,diet,type of diet,smoking,alcohol consumption,psychological state, and social adaptability are influencing factors of sub-health in the residents.