We developed a scenario for experimental farm work safety instruction computer software based on statistical analyses, such as agricultural machinery work accident analysis, and a sophisticated 3D model of a tractor and a rotary tiller for 3DCG to allow virtual experience of accidents.Farm work accidents with a tractor are occurred at high frequency. The scenario was composed of a day of work of rotary cultivation using a tractor with a retractable ROPS (Roll Over Protective Structure) and engine power of approximately 15 to 22kW, which is a common task with a tractor. The settings included diverse situations, such as falling from the tractor, collision with cars on the road, or the operator being pushed into an obstacle, such as a wall or tree, by the tractor, as types of accidents, and unpaved and paved farming routes, highways, and tunnels as types of road.Each item in the scenario was divided into evaluation and non-evaluation criteria; in the former, items related to farm work safety awareness were weighted in 4 levels. In addition, each item was weighted in 3 levels on both excellence for correct answers and on warning or attention for wrong answers from the viewpoints of accident prevention and health maintenance.A 3D model of the tractor and rotary tiller was developed, referring to several machine models currently on the market. The marks specified by the JIS standard and Japanese characters were both indicated on measuring instruments and manually operated devices on the tractor.