Finger swelling and numbness may be caused by localized compression, peripheral neuritis, carpal tunnel syndrome, cervical spondylosis and so on. 1. Local compression: when the fingers are subjected to long-term compression, it is easy to make the local blood circulation is not good, thus the phenomenon of finger swelling and numbness. 2. Peripheral neuritis: it can occur in a variety of diseases, such as diabetes mellitus, uremia and so on. It can lead to distal limb sensory impairment and autonomic nerve disorder, thus causing finger swelling and numbness. 3. Carpal Tunnel Syndrome: It refers to the compression of the median nerve in the carpal tunnel, which is mainly manifested as swelling and numbness, weakness, pain and other symptoms of the thumb, forefinger, middle finger, and is usually seen in middle-aged and old-aged females, who often have occupational diseases or a history of strain injury. 4. Cervical spondylosis: degenerative changes in the cervical spine, patients may also experience pain and numbness in the fingers. In addition to the above factors, there may also be other causes of finger swelling and numbness, when the symptoms of finger swelling and numbness persist, timely medical treatment.