The main symptom of anal fissure is bleeding with anal tearing pain, the amount of bleeding is usually small and bright red in color. Acute anal fissures are mainly treated conservatively by improving the diet and bowel habits, and using tainting suppositories and Ma Yinglong hemorrhoid cream to heal the fissures; chronic anal fissures have a long history, and the effect of conservative treatment is not good enough to consider surgery, which can be performed by anal fissure excision and partial severance of the internal anal sphincter. The pain in the anus during the stool may also be due to anal sinusitis, anal fistula or anal canal tumor, etc. Patients with pain in the anus during the stool should go to the hospital in time to get a clear diagnosis and then take the appropriate treatment.