Level I ligament injuries are not serious and mainly involve injuries to the tissue surrounding the ligament and superficial injuries to the ligament; deeper parts of the ligament generally do not show significant abnormalities. There is often congestion and edema around the ligament and superficial laceration of the ligament, which generally has no significant effect on the strength of the ligament. In this case, brake rest, local anti-inflammatory and analgesic treatment, blood circulation and blood stasis treatment, also including physical therapy, hot compresses and other physical therapy, after three weeks of rest and treatment recovery is good, there will be no residual obvious sequelae. However, if brake rest is not performed, it will often cause the aggravation of ligament injury and adverse consequences.