Dizziness after finger injury may be due to the following reasons: First, dizziness can occur due to very high violence at the time of the injury, or a relatively large psychological blow from the accident, which can lead to psychological damage or anxiety, etc. Second, the injury when the stomach is relatively hungry appear low blood sugar, stimulated by the trauma caused by the low blood sugar reaction and dizziness. Third, severe pain after the injury to the finger, which leads to vasoconstriction throughout the body, resulting in the blood supply to the brain is not very adequate, thus appearing dizziness.