For the treatment of anal fissure, local external hemorrhoids ointment can be used, such as Ma Yinglong hemorrhoids ointment, Yunnan Baiyao hemorrhoids ointment, etc. Hemorrhoids ointment can be used not only to treat hemorrhoids, but also to treat anal fissure. After defecation, sit bath with warm saline for 15 minutes every day, and then apply hemorrhoids ointment. In addition, anal fissure often exists at the same time as constipation, and dry stool will aggravate anal fissure, even if anal fissure is cured temporarily, it will recur again. Usually pay attention to eating more bananas, apples, celery and other vegetables and fruits, drink a spoonful of honey water every morning, and take Ma Ren Runchang Pill to moisten the intestines and relieve constipation in case of serious dryness. If the conservative treatment is ineffective and the anal fissure has a long and repeated attack, it needs to be treated by surgery.