The success rate of cerebral arteriovenous fistula surgery is relatively high, with the majority being able to reach over 90%. There are different types of arteriovenous fistula surgery in the brain, some are relatively simple and can be completely treated by applying a spring ring or a balloon, this is the simplest case and the success rate is basically 100%, but there may be other clinical changes, such as multiple arteriovenous fistulas, in which case the most important fistula must be found, or the fistula with the most abnormal hemodynamics. In such cases, the main fistula or the fistula with the most abnormal hemodynamics must be found before a complete arteriovenous fistula surgery can be performed, and in many cases it can recur, even in combination with open surgery, and some require 2-3 treatments, so it must be judged according to the situation.