The process of anal fistula surgery focuses on different surgical options by clarifying the formation of the fistula, the location of the internal opening. The process of anal fistula surgery, first of all, need to clear the formation of fistula through auxiliary examination such as MRI, the location of the internal mouth, according to the different location of the internal mouth and choose different surgical methods, such as fistulotomy surgery for low anal fistula that is the fistula is located in the deeper part of the external sphincter below, hanging wire therapy for high anal fistula that is the fistula is located in the deeper part of the external sphincter above. Secondly, surgical principles need to be followed to incise or excise the fistula to create an open wound to promote healing. At the same time, attention should also be paid to minimizing anal sphincter injury during surgery, preventing anal incontinence and avoiding fistula recurrence. If there is a need for anal fistula surgery, it is recommended that it be performed under the guidance of a professional doctor in a regular hospital to avoid delays.