It is highly unlikely that surgery for high complex fistula can be done properly in a single episode. The probability of doing it properly in a single episode is low compared to simple fistula, and a better prognosis can be achieved through staged or divided surgery. High complex anal fistulas may form multiple fistulas compared to simple anal fistulas, and with each episode, many smaller branch tubes may form. When doing the examination, it is not always possible to completely check or check clearly, and it is very likely that some small branch tubes will be missed during the operation, and it may not be possible to do a good job at one time. However, if the surgeon is more experienced and has a better skill level, he or she can check all the fistulas at once and cover all the fistulas at once during the surgery to cure them, the success rate of the surgery will be greatly improved. If there is no one-time success, it can be treated by split and staged surgery. Because of the complexity of the high level of anal fistula is more complicated, it is recommended to go to a regular hospital in a timely manner, choose a professional doctor surgical treatment, follow the doctor’s instructions and actively cooperate, according to the condition of the necessary again surgical treatment.