Anal fissure surgery mainly involves the removal of the fissure on the anal sphincter. The procedure is usually performed under local infiltration anesthesia and takes about 20 or 30 minutes, depending on the patient’s pain or the condition of the fissure. Because some patients with anal fissures also have anal stenosis, it may be necessary to partially sever the anal sphincter to act as a relaxation, which can prevent the recurrence of anal fissures. In addition, the wound needs to be treated after surgery, and if there is pulsatile bleeding, sutures are needed to stop the bleeding, so the operation time is relatively longer. After surgery, patients need to change the medicine to avoid infection and inflammation of the wound. Generally, you need to choose anal lotion and other medication sitz bath, with red oil cream gauze and other drugs applied externally, with antibiotics for anti-inflammatory treatment.