Objective:To study the relationship between sleep quality and psychosocial factors in prison police officers.Methods:Pittsburgh Sleep Quality Index(PSQI),Eysenck Personality Questionnaire(EPQ),Life Event Scale(LES) and Coping Style Questionnaire(CSQ) were used to evaluate the sleep status and psychosocial factors of 2093 prison police officers of Guangdong Province Prison Administration Bureau.Results:Their average score of PSQI was 7.10?3.68.40.71% of them had sleep problems.The scores of PSQI were correlated positively with the scores of N,negative life events,self-blame and rationalization,and negatively with working out a solution.Conclusion:The sleep quality problem of the prison police officers is serious.Their sleep disorder is obviously related to their mood stability,enduring negativity life events and coping style.