The causes of arm pain from fishing include overwork, muscle strain, underlying diseases, etc. The treatments include rest, physical therapy, medication, and surgery. 1. Rest: Holding a fishing rod for a long time can easily cause overwork of local muscles, which can be relieved by resting. 2. Muscle strain: The over-exertion can cause muscle strain of the arm. It can be relieved by cold compresses, massages and other methods, or external use of Yunnan Baiyao spray or diclofenac sodium paste to relieve pain symptoms. If necessary, oral painkillers such as ibuprofen extended-release tablets, indomethacin and so on. 3. Underlying diseases: such as humeral epicondylitis, oral or topical non-steroidal painkillers can be used. If conservative treatment is ineffective, partial excision of the annular ligament is feasible. In addition, patients with underlying diseases such as ossifying myositis of the elbow joint and elbow tubular syndrome may also cause the above symptoms, and treatment of the underlying diseases should be the main focus. If the above symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner to clarify the cause and give targeted treatment. The above medications should be used under the guidance of a pharmacist or doctor, avoid self-medication.