1. Rest, stop exercising immediately, and don't let the injured joint bear any more weight. 2. cold compress. Ice cubes or other cold compresses can help relieve pain and swelling, because lowering the temperature can reduce blood circulation. Each cold compress lasts 15 to 20 minutes, three or four times a day. 3. oppression. Pressing the injured part with bandages or other methods can reduce bleeding and congestion. The bandage should be moderately elastic, and you can feel the pressure but it won't make your branch numb or ischemic. 4. Raise the affected limb. The main purpose of raising the affected limb is to reduce swelling and promote blood return. Ligament sprain is called joint ligament sprain because external force makes joint activity exceed normal physiological range, which leads to ligament strain and partial or complete fracture around the joint. The most common parts of joint ligament sprain are knee joint, finger joint and ankle joint. After spraining the joint ligament, local swelling, pain, tenderness and subcutaneous bleeding can be seen in the blue area. It is very important to deal with joint ligament sprain correctly in the early stage. Because ligament tissue is not easy to regenerate and recover, if it turns into a chronic disease due to improper treatment or misdiagnosis, it may leave dysfunction and be easy to sprain again in the future. After the occurrence of acute injury, activities should be stopped immediately to reduce bleeding. Rinse the injured area with cold water immediately, or compress the wound with ice to stop bleeding. Then cover the bandage and press hard to prevent swelling. If the ligament is completely broken or suspected to be complicated with fracture, you must consult a doctor for further examination and then treat it after pressure dressing. After 24-48 hours, the internal bleeding at the injured site has stopped. At this time, you can apply or massage with a warm towel to reduce swelling and promote blood absorption. When warm and hot compress, the temperature should not be too high, the time should not be too long, and the massage should not be too heavy, so as not to aggravate exudation, edema or rebleeding. In order to promote the recovery of joint function, we should pay attention to the combination of motion and static, and carry out painless activities at an early stage. After the basic recovery, it is necessary to strengthen the strength training of muscles around the joints and improve the relative stability of the joints.