Taking the upgrading and reconstruction EPC project of Zhijiang Road as an example,the influencing factors of project risks were determined through literature reading and expert consultation. The risks of EPC project were divided into five categories, with a total of 22 sub categories. The five categories are contract risk, design risk, procurement risk, construction risk and external environment risk. The risk assessment results show that the first-class index weights of contract risk, design risk, procurement risk, construction risk and external environmental risk in EPC project risk are 0.250, 0.201, 0.154, 0.157 and 0.239 respectively. Contract risk is the main risk influencing factor of Zhijiang Road project. Contract risk is the main risk influencing factor of Zhijiang Road project. Strengthening the contract management of general contractor general contractor is helpful to improve the overall management level of the project.