Shoulder impingement is a symptom that occurs when the humeral head and the acromion impinge on the bursa and tendon when the shoulder joint is abducted or elevated, causing pain and limitation of movement. Shoulder impingement is one of the causes of shoulder pain because of shoulder joint degeneration, humeral tuberosity hyperplasia and acromion impingement, especially when the shoulder joint is abducted and lifted, the pain is obvious, and repeated friction can cause localized subacromial bursitis or shoulder ligament injuries, such as rupture of supraspinatus, which will result in obvious pain, limitation of shoulder activities, muscle atrophy, and loss of muscle strength. If it is caused by hyperplasia, arthroscopic surgery can be performed to remove the hyperplastic tissue, and if it is accompanied by supraspinatus muscle injury, surgical repair is required. Therefore, shoulder impingement is a common cause of lateral shoulder lifting pain, if the pain is obvious, you should go to the hospital in time, complete the relevant examinations, clarify the severity of the standardized treatment under the guidance of the doctor, so as not to delay the condition.