The numbness of the fingers along with the transient dizziness of the brain may be caused by low blood sugar, cervical spondylosis, cerebral vascular disease and other factors. 1. Hypoglycemia: When the energy supply to the brain is insufficient during hypoglycemia, there will be transient dizziness in the brain, and the excitability of muscle cells will be reduced due to insufficient supply, which will lead to the symptoms of weakness of the limbs and numbness of the fingers. 2. Cervical spondylosis: herniated cervical intervertebral discs can easily cause insufficient blood supply to the vertebral basilar artery system, resulting in ischemia and hypoxia of the cerebellar brainstem, and symptoms such as numbness of the hands and feet, dizziness, nausea and vomiting can occur when the peripheral sympathetic nerves are compressed. 3. Cerebral vascular diseases: Cerebral vascular diseases such as cerebral atherosclerosis, small cerebral hemorrhage, small cerebral infarction. There may be symptoms such as transient dizziness of the brain and numbness of the fingers, accompanied by nausea, vomiting and limb movement disorder. When numbness of fingers accompanied by transient dizziness of the brain, it is recommended to go to the Neurology Department of the hospital in time to do the relevant examination, and under the guidance of the doctor for treatment.