If active anal fistulotomy and thread-drawing surgery are carried out after the onset of an anal fistula, it generally does not recur easily. However, if patients do not pay attention to good dietary and defecation habits after being discharged, it may lead to the reoccurrence of the anal fistula. This is because there are multiple anal crypts within the anal canal, and removing the local anal crypts during this episode does not guarantee that other anal crypts will not become inflamed or infected in the future. Especially when patients consume excessive amounts of chili peppers or alcohol, or when they experience diarrhea, it can potentially trigger another infection of the anal crypts. Therefore, to prevent recurrence of anal fistulas, it is necessary to cultivate good defecation and dietary habits to avoid the reoccurrence of anal fistulas.