The reasons for numbness of the hands after work: first, need to exclude the nerve root cervical spondylosis, work process due to long-term low head lead to nerve root compression, so that after work there is numbness of the hands, most of them will be accompanied by numbness of the upper limbs, radiating pain, accompanied by the brachial plexus nerve pulling test positive signs, in the cervical intervertebral disc CT or magnetic resonance can be clear. Second, see the nerve entrapment, common in the clinic is the elbow tube syndrome, carpal tunnel syndrome, elbow tube syndrome, most of the trauma related to the history of elbow fracture or hawksbill congenital dysplasia, work will trigger numbness of the hand, most of the ulnar side of the skin numbness, hypesthesia, atrophy of the inter-fischial area, numbness of the little finger and the ring finger. Carpal Tunnel Syndrome (CTS) is mostly seen in people with frequent wrist stress, also known as mouse hand, which can lead to compression of the median nerve after work, and clinically manifests as numbness of the thumb, forefinger, and middle finger, paresthesia of the greater fisheye, numbness of the skin on the radial side, and hypesthesia or loss of sensation.