Objective To have knowledge about the sub-health status and its influencing factor of different occupational groups in Nanjing so as to provide scientific basis for taking effective prevention measures.Method In-service staff aged 18to 60from 5occupational groups（civil servant

scientific and technical personnel

managerial staff in enterprise and public institution

teacher and laborer）in Nanjing were chosen with stratified sampling and a survey of sub-health status was conducted on them using questionnaire.Results Incidence rate of sub-health was 42.98%.The incidence rate of sub-health in the male was 22.04% while that in the female was 20.94%

and the differences were statistically significant（χ2=45.188

p<0.01）.The average of total scores on sub-health self-evaluation scale was（72.06±11.10）

average score of physiological status was（35.30±6.14）

average score of psychological status was（23.93±4.56）and that of social adaptation was（12.83±2.38）.There was a statistically significant difference in incidence rate of sub-health in different occupational groups（χ2=33.145

p<0.01）.The sub-health in occupational groups was related to educational background

occupation

average monthly earning of the family and marital status etc.

and the differences were statistically significant（p<0.01）.Conclusion Health status of occupational groups in nanjing is not optimistic.The sub-health status varies by gender and occupation

which is related to such factors as educational background

occupation

average monthly earning of the family and marital status.Therefore

relevant authority shall pay attention to sub-health issue and take corresponding prevention measures.