Anal fissure is a series of clinical symptoms such as pain or rectal bleeding that occur due to the formation of a crack in the local sphincter muscle of the anus. The main reason for the occurrence of anal fissures is due to poor defecation habits in the early stages of the patient, or excessively dry stools, and excessive force during defecation, causing the local sphincter to burst, resulting in the fissure opening pain or bleeding. To treat anal fissures, it is first necessary to soften the patient's stools and adjust defecation habits. If the patient's diet is poor, it is recommended to maintain a light, easily digestible diet long-term. For those with dry stools, appropriate oral medications to lubricate the intestines and facilitate bowel movements can be used, or sesame oil can be applied around the anus before each defecation to lubricate the stool. If recurrent episodes of anal fissures occur, surgical treatment can also be directly performed. (Medication use should be under the guidance of a doctor.)