Numbness in the left hand and the urge to vomit are common causes of mixed cervical spondylosis, which usually consists of neurogenic cervical spondylosis and vertebral artery cervical spondylosis. The cervical intervertebral disc protrudes backward into the spinal canal, compressing the nerve roots and the hook vertebral joint, and the nerve roots penetrate through the intervertebral foramen into the upper limb, innervating the movement and sensation of the upper limb. Osteomalacia occurs in the transverse foramen, causing narrowing of the transverse foramen, which can also compress the nerve roots. Compression of the nerve root can lead to abnormal upper limb movement and sensation, such as numbness and weakness of the hand. Cervical disc herniation leads to hyperplasia of the hook vertebral joint, and compression of the vertebral artery by the hook vertebral joint causes cerebral blood supply insufficiency, which can cause dizziness and symptoms of nausea and vomiting. External fixation of cervical brace and cervical traction can relieve the symptoms of hand numbness and nausea and vomiting.