The first cause is shoulder joint disease. When the rotator cuff is torn or there is frozen shoulder, the symptoms of soreness when lifting the arm can be accompanied by a limitation of shoulder joint movement, which should be diagnosed by an X-ray or MRI of the shoulder joint, and if the condition is serious, surgery is needed. The second cause is myofasciitis. The first symptom of myofasciitis is pain on the inner side of the scapula, which can be radiated to the ipsilateral shoulder and upper limb, and the symptom of soreness when lifting the arm can be accompanied by soreness and weakness. The third cause is cervical spondylosis, which can cause neuropathic pain in the arm due to nerve compression in severe cases, resulting in soreness and pain when lifting the arm, and early medical examination, cervical spine X-ray, CT and MRI are required for diagnosis and treatment.