Consider frozen shoulder, rotator cuff injury, acromioclavicular arthritis, trapezius strain, cervical spondylosis, bone fracture and other causes of right shoulder pain. 1. Frozen shoulder: mostly manifested as shoulder joint pain and obvious limitation of activities, which can be slowly recovered by taking non-steroidal anti-inflammatory drugs and rehabilitation exercises. 2. Rotator cuff injury: ligament tear caused by degeneration or trauma to the shoulder joint, limitation of shoulder joint activities and weakness. Small tears are treated conservatively, while serious tears need arthroscopic repair. 3. Acromioclavicular arthritis: degeneration and hyperplasia of acromioclavicular joint cause pain in the shoulder joint, localized bulge and limitation of activities. 4. Trapezius muscle strain: chronic muscle strain caused by prolonged posturing causes shoulder pain. 5. Cervical spondylosis: osteophytes or nucleus pulposus compressing the nerves can radiate to shoulder pain. 6. Fracture: Fracture of shoulder joint after trauma causes pain, deformity and limitation of activity. Right shoulder pain needs to go to the hospital for examination to clarify the cause of the cause of treatment.