Knee sprain healing generally refers to the basic relief of the injury, rehabilitation training mainly includes muscle strength training, knee joint proprioception training and relaxation training and other training methods. 1. Plyometric training: It mainly includes muscle strength training for the muscles around the knee joint, such as quadriceps, hamstrings, and hip and other muscle strength training is also important for the rehabilitation of the knee joint. Patients can choose appropriate muscle strength training methods according to their own conditions and strength. 2. Knee joint proprioception training: you can use the balance cushion or balance instrument for knee joint control and stability training. Sprain of the knee joint will lead to the loss of proprioception, which will reduce the control of neuromuscular reflexes, and the functional stability of the knee joint can be improved through the knee proprioception training. 3. Relaxation training: Relaxation training plays an important role in preventing knee injuries. Tight muscles will produce pressure on the knee, which will limit the movement of the knee joint. You can use small balls, foam shafts and other equipment or stretching exercises to relax the anterior thigh, posterior thigh and calf muscles in order to improve muscle flexibility and extension. After the knee sprain, you should go to the hospital in time, and actively cooperate with the doctor’s treatment at an early stage, which is conducive to the early recovery of function.