If an anal abscess ruptures, it then forms an anal fistula. Both the acute phase of an anal abscess and anal fistula require surgical treatment. If only the local pus is drained, it is generally recommended to open the abscess cavity for local debridement and disinfection, and to further excise the infection focus. During surgery, to protect the function of the local anal sphincter, a seton stitch procedure is also needed. Post-surgery, it is necessary to disinfect and change dressings for the local wound, and ensure normal growth of the granulation tissue to prevent the occurrence of false healing.