The self-healing time of anal fissures depends on the time of occurrence. Fresh anal fissures with an onset of less than 3 months usually heal on their own in about 3 weeks if care is taken; old anal fissures are usually difficult to heal and require treatment through surgery. New anal fissures are small and shallow, and patients can usually use pepper water sitz baths and apply Ma Yinglong hemorrhoid cream for treatment, which can recover in about 3 weeks, while patients should pay attention to a light diet and keep their bowels open. When the anal fissure reaches a certain severity, once the skin of the anal canal is damaged and fecal bacteria enter the normal subcutaneous mucosa, local inflammatory reactions can occur, and once it reaches the muscular layer, the fissure cannot heal and there is no possibility of self-healing, and medication or surgery must be taken. In addition, it is recommended that patients with early anal fissures consume more fresh vegetables and fruits on a daily basis and drink more water to make the stool watery and laxative to avoid constipation. Patients must rinse the anus clean after defecation and then apply anti-inflammatory ointment to prevent further aggravation of the condition.