In order to help track and field athletes scientifically and efficiently carry out injury prevention and rehabilitation training, this research, supported by the Internet of Things technology, developed a set of injury medical rehabilitation training system for track and field athletes using Kinect technology. First of all, the hardware of the system is carefully designed to ensure that it can meet the functional requirements of track and field athletes in the injury medical rehabilitation training. Then, the system software was developed by constructing the system software architecture, analyzing the movement posture, monitoring the injured parts, formulating the rehabilitation training plan, and providing medical rehabilitation training and action guidance. Actual testing results show that after applying this system, Fugl Meyer’s lower limb motor function evaluation score and Guokang posture and motion evaluation measurement score significantly improved, demonstrating clear advantages in rehabilitation training.