The treatment of shoulder joint fluid and pain can be general treatment, physiotherapy, medication and surgery depending on the cause of the disease. The common causes of shoulder joint effusion and pain include shoulder trauma and fracture, chronic strain injury, frozen shoulder, shoulder arthritis, shoulder bursitis, rotator cuff injury and so on. 1. Traumatic fracture of the shoulder joint: when the traumatic fracture of the shoulder joint causes fluid accumulation and pain, if the fracture is not obviously displaced, the shoulder joint can be braked and rested for treatment, and oral medicines to promote fracture healing, such as Bone Dragon capsule and other treatments. However, if the fracture involves the joint, surgery is needed for internal fixation. 2. Chronic strain injury: Chronic strain injury of shoulder joint causes fluid accumulation and pain, and the main muscles, tendons, fascia and other tissues are damaged, but there is no structural damage, so the shoulder joint can be braked and rested, or localized infrared heat therapy, intermediate-frequency electrotherapy and other physical therapy measures can be taken to improve the symptoms. 3. Frozen shoulder, shoulder arthritis, shoulder bursitis: For frozen shoulder, shoulder arthritis, shoulder bursitis causing shoulder joint effusion and pain, mainly due to aseptic inflammation, early oral anti-inflammatory and pain relieving drugs such as acetaminophen, bisacodyl bursal, etc. can be used to improve the effusion and pain in the shoulder joint. Physical therapy such as hot compresses and baking can also be used. 4. Rotator cuff injury: For serious rotator cuff injury, such as serious rotator cuff tear, it is necessary to repair the tear under shoulder arthroscopy. There are other causes of shoulder joint effusion and pain, if it continues to be unrelieved, it is recommended to consult a doctor in time, improve the relevant examination, clarify the cause of the disease and then follow the doctor’s instructions to carry out targeted treatment, and do not self-medication, so as to avoid delaying the condition.