Aiming at the problems of difficult implementation, harsh training conditions and high training cost of marine BJ training, a simulation training system of marine dry cargo BJ equipment based on virtual reality technology is proposed. The mechanical model of typical BJ equipment elevated cable is established, and the force of elevated cable is analyzed. Combined with the position dynamics algorithm, the simulation of flexible objects such as elevated cable of offshore BJ equipment is realized. The animation effect of virtual human skeleton rotation is completed by using reverse kinematics. Collision detection technology is used to detect the collision of virtual scene and realize the interactive response of BJ device. After testing, the system can realize the BJ operation training process and effectively improve the training efficiency.