Small arm pain can be caused by exertion and cold, humeral epicondylitis, nerve root cervical spondylosis, etc. Rest and medication can be taken according to different causes. 1. Exhaustion and cold: physiological symptoms of small arm pain can occur, after sufficient rest, avoid heavy lifting, and pay attention to cold and warmth and other general treatment, the pain can gradually improve. 2. Epicondylitis of humerus: commonly known as tennis elbow, often caused by chronic strain, can be rest, ice, appropriate functional exercise, the use of ibuprofen, rosoprofen sodium and other medications as prescribed by the doctor, and if necessary, consider surgical treatment. 3. Neurogenic cervical spondylosis: compression of the nerves can lead to numbness of the hands and pain in the arms, and can be treated with the general treatment and medication mentioned above, as well as with nutritive drugs such as vitamin B12 and physical therapy, and traction and other methods of treatment can be considered when necessary. If necessary, traction can also be considered. The use of medication should be in accordance with the doctor’s instructions. There may also be other causes of arm pain, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.