Anal fissures occur in the anterior and posterior median parts of the anus. The anterior median is the part of the anus near the perineum, and the posterior median is the part of the anus near the coccyx, which is also the 12 o’clock and 6 o’clock of the bladder truncus, and these two positions are very prone to anal fissures. The posterior median of the anus is more likely to develop because these two positions are subjected to the most pressure from the stool during defecation, with the posterior median being subjected to relatively more pressure, so the anal fissures that are often seen are often fissures in the anterior and posterior median. New anal fissures can be treated with herbal sitz baths, topical hemorrhoid creams, and improved dietary habits, and there is a certain chance that they will grow back. If it turns out to be an old anal fissure, most of this will require surgery, as conservative treatment is not particularly effective.