Ports play a key intermediate role between maritime and other systemes of transport. Due to the many activities that are carried out in ports nowadays, there are various dangers at any point in port and working in the port is considered a high risk job. In this research, the factors affecting occurrence of work accidents in Shahid Rajaee Port were identified and prioritized. At first, the factors were identified using numerous interviews and meetings with operational managers, experts and HSE professionals and also review previous research and literature and then using Delphi technique they were selected. Prioritize the factors was done using AHP method and distributing 105 questionnaires which out of them 86 valid ones collected. The statistical population of this study are the managers and experts of HSE and operation Shahid Rajaee Port. Since research findings can be used to reduce number of work accidents in Shahid Rajaee Port, it is considered as an applied research in terms of purpose and is descriptive, in terms of the type and nature of the research. The importance and prioritization of each of the factors affecting the occurrence of workplace accidents were identified using the (AHP) hierarchical analysis process. The results showed that high risk-taking of the employees, excessive fatigue, inadequate supervision of contractors and staff / workers, respectively, were the first to third priority in influencing factors of work accidents in Shahid Rajaee Port.