The tendon pain in the arm is related to trauma, strain and other causes. It can be treated with general treatment, physical therapy, medication (such as diclofenac sodium, lidocaine, triamcinolone acetonide, etc.) and surgery (repair, release, etc.) depending on the cause. 1. Trauma: Injury to the tendon can cause pain if there is a tendon strain and contusion. After the injury, rest should be paid attention to, also elevate the affected limb to promote blood return. Cold compresses are applied during the acute injury period, and hot compresses are applied during the recovery period. Severe pain can be treated with anti-inflammatory and analgesic drugs, such as diclofenac sodium. If the tendon injury is serious, there is tendon fracture and limb movement disorder, surgery is feasible for repair treatment. 2. Strain injury: If frequent stretching or repetitive activities, tendon will cause pain due to aseptic inflammation caused by strain. When the pain should pay attention to rest, acute inflammation can be cold compresses, the recovery period can be hot compresses. It can also be combined with infrared rays, microwave and other treatments. If there are localized pain points, it can be closed with lidocaine, tretinoin and other closed treatment. Repeated episodes of inflammation, feasible release surgery treatment. There are other causes of arm tendon pain, please go to the hospital in time for further examination of the cause, and then targeted treatment. The above drugs need to be used in a standardized manner under the guidance of a doctor.