Abstract: ［Abstract］Objective　To learn current status and influentcing factors of post competency among preventive medicine graduates from a medical university，in order to provide evidence for the improvement of post competency preventive medicine graduates．Methods　We adopted stratified sampling strategy，chose 1 provincial，1 municipal and 2 county level CDCs，used self-developed questionnaires to survey preventive medicine graduates from a specific medical university. Clustering analysis，correlation analysis, Logistic regression and rank-sum test were applied to analyze data．Results　Among all respondents，26 (40.63%) reported that they were totally competent on their posts，the rest 38 (59.37%) reported ordinary post competency. We found 7 factors that were significantly associated with post competency: fondness of the job，whether proactive on the job，whether responsible to the job，et al. Conclusion　Post competency of preventive medicine graduates from this particular medical university exceeded preventive medicine graduates from Xinjiang Medical University. However, there still exists some problems for improvement. We recommend that universities and working units should improve post competency of preventive medicine students based on those influential factors we identified.