The numbness of the fingers may be related to excessive hand fatigue, or it may be caused by cervical spondylosis, diabetic peripheral neuropathy, carpal tunnel syndrome and other reasons. 1. Excessive hand fatigue: If the hand is long time over exertion, or long time engaged in manual work, keep a fixed position for too long, easy to cause the hand muscle nerve overstrain, it may show the finger numbness. 2. Cervical spondylosis: especially the existence of cervical disc herniation patients, the protruding disc is easy to cause compression of the local nerve root, resulting in pressure on the part of the nerve innervated by the sensory impairment, may show numbness of the fingers, but also accompanied by numbness of the upper limbs, weakness, neck and shoulder pain and other symptoms. 3. Diabetic peripheral neuropathy: this disease can lead to damage to the peripheral nerves of patients, resulting in impaired blood circulation of the nerves in the area, resulting in the local nerves can not get enough energy supply, resulting in sensory deficits, and numbness of the fingers may occur. 4. Carpal Tunnel Syndrome: When the median nerve, which innervates palmar sensation of the hand, passes through the wrist, the narrow carpal tunnel is compressed and induces symptoms. Numbness or pain is often felt in all three fingers and is most severe in the middle finger. The disease can occur unilaterally or bilaterally, and the symptoms are most severe at night or early in the morning, and can be relieved by shaking the wrist appropriately. If the symptoms of numbness in the fingers persist and cannot be relieved, you should consult a doctor as soon as possible to identify the cause and then give targeted treatment to prevent delays in the condition.