If you find that your knee hurts, first of all, go to a regular hospital after the injury and check your knee to see if there are any injuries to the ligaments and meniscus. If there is, remember to follow medical advice; 2, knee pads can reduce the burden on your knee when you exercise, but knee pads are not the solution, only auxiliary measures, you ultimately need your own strong leg muscle strength to protect the knee; 3, the basic muscle strength of the leg is the key to ensure that your knee is not injured or less injured. And deep squat for exercise leg muscle strength better method, but pay attention to the method, because if the action is not standard, but will let themselves injured. The static squat for the protection of the knee joint is good, but also need to be gradual, but also time requirements, adhere to 10 minutes later, the knee will secrete joint fluid to play a protective role, the beginning of 90 degrees, you can not do, then you can back against the wall, do 45 degrees, so you can hold on for a while, because only more than 10 minutes to be effective, slowly you can do 90 degrees, and then a deep squat 45 degrees, which is Practice muscle strength better method; 4, can do physical therapy, massage, hot compresses, if the time is not convenient to buy a physical therapy instrument for their own physical therapy, after the improvement, first from walking, and then gradually increase the amount, and then intermittent running (walk a section of running), adapt to the full recovery of running. Note is to be gradual, pay attention to pre-warm-up, knee rub, the best buy a pair of shock-absorbing better running shoes, if conditions allow, you can customize FooTek? running-specific orthopedic insoles or custom sports orthopedic shoes. 5, must not land on the full foot, and is the landing should also be gently, can not force the landing, which will have a relative force on the knee and heel, which will accelerate the knee pain, running as far as possible with the forefoot landing, a little jump feeling, slowly, first let the body adapt to say. Jog for a while to allow the joints to fully stretch the movement. After it is over, stretch and relax again, only then can you prevent lactic acid buildup and work out a more fit muscle and body.