A small amount of fluid accumulation in the subacromial bursa, most of which is subacromial bursitis, is caused by the patient’s repeated impact between the rotator cuff and the acromion during repeated shoulder lifts, resulting in aseptic inflammation of the shoulder, which is often accompanied by significant pain and varying degrees of activity restriction in such patients. When this occurs, early conservative treatment can be attempted, including oral non-steroidal anti-inflammatory drugs, local microwave, baking lamp and other physical therapy methods. If conservative treatment is ineffective, subacromial closure treatment can be performed by a specialist, i.e., lidocaine with tretinoin for 2-3 injections under the acromion. If the symptoms recur or the relief is not complete, arthroscopic surgery can be performed to remove the subacromial bursa, which can provide quick relief.