With the emergence of the role of public security audit in public security work， the requirements and workload of public security auditors have increased accordingly，which makes some public security auditors tend to be slack， thus affecting the efficiency of public security audit. Whether the job burnout of public security auditors is caused by work pressure and whether the psychological capital in personal resources can alleviate the job burnout need to be clarified. Taking Jiangsu public security auditors as an example，using questionnaires as the research instrument， this paper studies the relationship between work pressure， psychological capital and job burnout of public security auditors. Conclusions have been reached that increasing positive work pressure is conducive to alleviating job burnout and improving psychological capital has no obvious effect on alleviating job burnout. Based on the conclusion，it would be of benefit for us to increase the challenge pressure while eliminating the blocking pressure，cultivate the psychological capital and pay attention to create a mutually supportive working atmosphere to alleviate the job burnout of public security auditors.