The main methods of knee bandaging are as follows: 1. After the knee area injury, the innermost layer of the bandage is usually placed with sterile gauze, about 8 layers of sterile gauze. Then bandage bandage, bandage when each layer of bandage to cover the previous layer of bandage about 2/3, in turn, winding, the whole knee fully wrapped. 2, if there is obvious blood seepage, to replace the sterile gauze and bandage in a timely manner. The bandage should be replaced once every 3 days if there is no obvious redness or swelling. 3. Do not use too much force during the winding process because excessive force may lead to pressure on the blood circulation and nerves, resulting in whitening, purple or swelling of the distal end, or numbness of the distal end. In addition, the bandage should not be too loose, because too loose can not play the role of compression to stop bleeding, will lead to a further increase in local bleeding.