The hand is easy to numb to consider several reasons: 1, cervical spondylosis disc herniation, compression of the corresponding blood vessels and nerves, resulting in sensory abnormalities, such as numbness, rise, and sometimes pain, may also be accompanied by neck and shoulder muscle pain, upper limb weakness and other symptoms. 2, there has been a history of trauma to the hand, injury to the hand nerves, muscles, etc., the hand itself is damaged, the hand itself, the symptoms of numbness. There are also work relations, such as long-term computer work, so that the arms pressed on the table, resulting in, for example, mouse hands, etc., long-term pressure can also lead to abnormal sensation. 3, long-term diabetes caused by peripheral nerve damage, blood circulation disorders, etc., the emergence of sensory numbness. 4, the working environment of a lower temperature, such as engaged in the refrigeration industry, the need to carry low-temperature goods, the hands of long-term contact with low-temperature goods, etc., resulting in the temperature of the hands to feel abnormal, numbness. Abnormal, numbness.