Abstract: Objective To study the distribution and influence factors of sub-health among urban residents in Tianjin,and to provide evidences for prevention and control of sub-health.Methods Sub-Health Measurement Scale Version 1.0(SHMS V1.0) was adopted and a representative sample of urban residents aged ≥14 years was recruited with stratified cluster sampling from 6 districts of Tianjin.A total of 4500 questionnaires were distributed and 3866 with eligible information were collected.Statistical description and data analyses were conducted using SPSS 15.0.Results The mean score of SHMS V1.0 was 65.55±12.13,with the scores of 70.13±13.12,62.92±14.90,and 61.94±16.96 for physical,psychological,and social sub-scales among the participants,respectively.The detection rate of sub-health was 66.37%(n=2566) and the rates of severe,moderate and mild sub-health were 11.23%,33.26%,and 21.88%,respectively,among the participants.The male participants had a significantly lower sub-health detection rate than the female(63.94% vs.68.31%).The results of unconditional multivariate logistic regression demonstrated that aged ≥20 years,with the education of junior college,being married/divorced/widowed,having poor or general sleep quality,and experiencing negative events were potential risk factors,while male gender,with normal body weight,and having breakfast regularly were potential protective factors for sub-health among the participants.Conclusion The prevalence of sub-health is relatively high and mainly influenced by gender,age,education level,marital status,body mass index,alcohol drinking,breakfast behavior,sleeping quality,and negative life events among adult urban residents in Tianjin.