Anal fissure is a common disease in anorectal medicine, the main symptoms of which are anal pain, habitual constipation, and blood in the stool. According to statistics, the number of young women suffering from anal fissures is much higher than that of men, so why are women prone to anal fissures? A constipation triggered by anal fissure: women are relatively more prone to picky eating than men, which can easily cause irregular stools, most have a history of constipation. Dry, hard feces and constipation are both the cause and the result of anal fissures, which are mutually beneficial and form a vicious circle. Local infection caused by anal fissure: compared to men, women are better “static” and not good “movement”, especially young women, after pregnancy is a corresponding reduction in activity, resulting in a weakening of intestinal peristalsis, very easy to produce constipation. After the constipation of the dry hard feces easy to abrade the skin of the anal canal caused by local infection, it is easy to cause the occurrence of anal fissures. Three, childbirth caused by anal fissures: women often overexerted during childbirth, resulting in anal canal perineal area tear, causing pain and bleeding, resulting in anal fissures. Some unmarried women are also more likely to suffer from anal fissures, especially during menstruation, which may be caused by local inflammation of the anus due to lack of rest and attention to menstrual hygiene during menstruation, resulting in anal fissures. It may also be related to the congestion of the perineum during menstruation. Therefore, we are reminded that anal fissures should be prevented and treated early. Some people do not suffer from anal fissures in their life, and their experience lies in keeping their stools soft, having regular bowel movements on time, and not having bad habits of squatting for a long time. This is the fundamental way to prevent anal fissures. Early onset anal fissures can be completely cured by conservative treatment. For example, a coarse fiber diet or laxative medication can be used to soften the stool, along with topical medication.