Early after the joint sprain should be cold compress, 48-72 hours after the hot compress, as follows: 1, cold compress: when the patient after the joint sprain, just after the injury, need to actively cold compress, the main purpose of cold compress is to constrict blood vessels, reduce bleeding, reduce local swelling. 2, hot compress: never premature hot compress, otherwise it will aggravate the bleeding, aggravate the local swelling symptoms, need to wait until 48-72 hours after the injury -The main purpose of hot compress is to promote local blood circulation, promote the absorption of local blood, so as to effectively improve the clinical symptoms of the patient’s joint sprain and promote rapid recovery of joint sprain. For patients with joint sprains, active physical examination, lateral stress test, drawer test and local MRI examination are required to clarify the severity of the joint sprain, so as to determine the corresponding treatment plan, for example, if there is a complete ligament tear, it is necessary to actively carry out ligament repair and reconstruction surgery.