Arm pain and weakness can be relieved by the following methods: First, oral medication: oral anti-inflammatory and pain-relieving drugs, such as meloxicam and celecoxib, which can effectively relieve pain. Second, physical therapy: microwave physiotherapy, infrared physiotherapy, etc., can also relieve the symptoms of arm pain due to chronic inflammation, especially for the arm pain caused by humeral epicondylitis, internal epicondylitis, etc., has a very good effect. Third, clarify the cause: identify the cause and then treat it according to the cause. Arm pain and weakness can be caused by myofasciitis or cervical spondylosis, which should be diagnosed by examining the MRI of the cervical spine to treat the cause and remove it so that the symptoms of arm pain and weakness can be completely relieved and cured.