Numbness of the right ring finger may be caused by cervical spondylosis, ulnar nerve palsy or local nerve injury. 1. Cervical spondylosis: localized osteophytes in the cervical spine, degeneration of cervical intervertebral discs, old injuries, excessive activities and other causes of local nerve compression, which can lead to numbness of the right ring finger. In addition, numbness in other parts of the hand, neck and shoulder pain, dizziness, arm pain and other manifestations can also occur. 2. Ulnar nerve palsy: ulnar nerve palsy is caused by aseptic inflammation of the ulnar nerve due to external factors, which can lead to numbness of the ring finger. Ulnar neuritis is mainly manifested in the nerve dysfunction of little finger and ring finger, such as numbness, weakness and so on. 3. Localized nerve injury: localized nerve injury to the ring finger can also lead to numbness of the right ring finger, and the common causative factors include pressure, infection or cutting injury. Numbness of the right ring finger should be taken seriously, go to the hospital in time, under the diagnosis of the doctor to determine the condition of treatment.