Numbness of fingers may be a precursor of major diseases such as cerebral infarction and cerebral arteritis, or it may be due to physiological factors such as inadvertent pressure on the fingers and cold. Cerebral infarction refers to a kind of blood circulation disorder in the brain, and some people with the disease will have paroxysmal sensory and motor function disorders before the onset of cerebral infarction, such as numbness in different parts of the body, dizziness, paralysis, etc. Cerebral arteritis refers to vasculitis of the central nervous system. Cerebral arteritis refers to vasculitis of the central nervous system, and people suffering from this disease will have headache and numbness of limbs before the onset of the disease due to nerve damage. In addition to the above disease factors, there may also be certain physiological factors. When the fingers are inadvertently compressed while resting, the local blood supply of the fingers is affected and symptoms such as numbness and pain in the fingers occur. In the case of cold weather, the exposure of the fingers to the outside is easy to make the temperature of the fingers lower and cause blood circulation at the end of the finger to be impaired, the clinical manifestations of numbness and abnormal sensation of the fingers. If it is a disease factor, it is recommended to go to the hospital as soon as possible for consultation and treatment.