Anal fissure dilatation treatment will be effective and post-anal fissure sequelae can occur in patients after anal dilatation. The sequelae can cause great pain to patients in a short period of time, and anal fissure repair after anal dilatation has become a priority for patients after anal dilatation. The hospital also offers post-dilatation anal fissure treatment, choosing different treatment plans according to the patient’s anal fissure condition. The main purpose of anal dilation is to release the spasm of the anal sphincter and relax the anal sphincter, allowing minor or fresh anal fissures to heal in a short period of time. The method of anal dilatation is local anesthesia for anal fissures, and after the patient lies on his side and dilates the anus with the index finger, he gradually extends the two middle fingers to maintain a certain strength for about 5 minutes, 1-2 times a day. In summary, if there is an anal fissure to go to the hospital in a timely manner for scientific treatment.