Arm pain at night, according to the incidence of the following reasons can be considered: 1, need to exclude cervical spondylosis, if arm pain occurs mainly in the upper arm, radiation to the forearm, the primary exclusion of cervical radiculopathy, neurogenic cervical spondylosis is usually due to cervical Luschka joint hyperplasia, cervical disc degeneration, nucleus pulposus prolapse, narrowing of the intervertebral space, compression of the spinal nerve root and symptoms The pain is usually in the neck and collar area, radiating to the back of the shoulder and upper limbs, and even to the forearm and fingers, and can be treated with traction, neck brace or oral anti-inflammatory painkillers. 2, trauma and strain, for patients who have recently experienced soreness caused by heavy lifting or strenuous exercise, they will get better in a short time after applying heat and physical therapy. Chronic muscle strain and aseptic inflammation of the arm, such as epicondylitis and medial epicondylitis of the humerus, are usually caused by chronic strain and chronic inflammation at the attachment point of the tendon, most of which can be significantly relieved by conservative treatment, and a few of which can be significantly relieved by muscle closure injection. 4. Tumor compression can also cause soreness and numbness in the arm. The situation needs to be carefully analyzed according to the specific location of the patient’s arm soreness and swelling.