[Purposes]The paper aims to study the problems of many influencing factors and difficult safety management in highway construction site. [Methods]Based on data envelopment analysis(DEA)method, a safety management performance evaluation system of highway engineering construction site was established.Taking a highway project in Guangxi Province as the research object, six factors were selected as evaluation indexes from safety assets, safety inspection and safety training,and then the project was evaluated by using the non-radial slack-based model(SBM)in data envelopment analysis.[Findings]The safety management levels of the two bid sections of the highway project from January to May are polarized. For the months with low safety management efficiency of the two bid sections,there are generally redundant input and insufficient output, which is mainly because the number of safety production education and training personnel is small, and the output rate of completed output value of safety assets is low. Moreover,the actual input and completed output value of safety assets are more sensitive to the safety management efficiency of the two bid sections of the highway project from January to May. [Conclusions]Applying the established evaluation system to the safety management performance evaluation of highway engineering construction site can find out the problems, causes and main factors affecting the safety management performance of highway engineering construction site, which provides the direction for improving safety management in construction site.