The inability to lift the arm after cervical spine surgery should be handled according to the specific situation, and usually requires conservative treatment and surgical treatment. 1. Conservative treatment: If the arm cannot be lifted for a short period of time after cervical spine surgery, it may be due to the local edema triggered by the surgical stimulation, etc., and the symptoms can be improved by reducing the neural edema through the intravenous use of mannitol and hydrocortisone. 2. Surgical treatment: if the patient cannot be relieved by conservative treatment, it should be suspected whether other attachments of the cervical spine and the vertebral canal are damaged during the surgery, and the cause should be clarified by MRI. If there is compression of the nerves in the cervical vertebrae, it is necessary to carry out surgical treatment again in time to loosen the compressed nerves and restore the function of the nerves that control the nerve conduction in the upper arm, and then the symptom can be effectively improved. If the arm cannot be lifted after cervical spine surgery, the surgeon should take reasonable measures according to the specific judgment of the surgical situation.