Objective: The purpose of this study was to investigate the cases of safety accident that occurred in Agricultural Product Processing Plants (APPPs), and the root cause and system of safety were analyzed by using logic tree diagraming method.<BR>Background: Local rural development organizations have been expanding agricultural processing-related facilities by supporting related education and starts-ups in order to increase non-agricultural income and create jobs. However, since the machinery and equipment of agricultural processing plants use high-pressure, high-temperature, and high-speed rotation, workers are exposed to various risks. Since the number of safety accidents occurring at APPPs is increasing every year, it is necessary to manage and control the characteristics of accidents.<BR>Method: The cases of 29 safety accidents that occurred in 10 APPPs were collected. Demographic characteristics and risk factors were investigated for 29 people who experienced accidents. In addition, logic tree diagraming method was conducted in order to analyze root causes and systems of safety.<BR>Results: For the rate of 29 accidents by type of accident risk, high-temperature (41.4%) was identified as the highest rate, followed by excessive force/movement (20.7%), bump (13.8%), and jammed (6.9%). As for the type of injury, burns (48.3%) had the highest rate, followed by musculoskeletal disorders (20.7%), incised wound (10.3%), and cut (6.9%). Fracture, amputations, and stabbed were 3.4%, respectively. As results of logic tree diagraming method, 119 root causes were derived, which were classified into six categories in systems of safety. The most common system of safety was mitigation (28.6%), followed by design (23.5%), personal protective equipment (19.3%), training (17.6%), warning (9.2%), and communication (1.7%).<BR>Conclusion: It was confirmed that the accident types in APPPs were similar to those in general industries, and it was determined that control and management of burn accidents were necessary. In addition, it is considered that measures such as installing protective devices, attaching warning signs, and wearing appropriate personal protective equipment are necessary to minimize the risk of APPPs.<BR>Application: It is hoped that the results of this study will be utilized in the development of safety guidelines, checklist items, and manuals for the prevention of safety accidents for workers in APPPs.