The examination of ligament strain mainly includes physical examination and imaging examination. 1. Physical examination: If the ligament is injured, it may cause pain around the ligament and abnormal movement of the surrounding joints. For example, increased mobility of the elbow joint inward and outward, suggesting injury to the elbow joint medial and lateral collateral ligaments. Positive anterior and posterior knee drawer test suggests anterior and posterior cruciate ligament injury of the knee. Physical examination is of great significance in the diagnosis of ligament injury. 2. Imaging examination: common imaging examination is mainly magnetic resonance. Magnetic resonance can show the condition of muscles, ligaments and other soft tissues, and high resolution, which is important for the diagnosis of ligament injury. Ligament injury is a common injury in the clinic, once occurred, should go to the hospital in time, under the guidance of professional doctors for diagnosis and treatment.