Urination and defecation are usually normal after anal fistula surgery. Anal fistula surgery, farther away from the kidneys and ureter, will not touch the organs of the urinary system during surgery, so the urine and feces are usually normal. However, as the surgery is performed under anesthesia, there may be temporary difficulty in urination due to saddle anesthesia/lumbar anesthesia after the surgery, which can be recovered within 24 hours. Stools are produced by the intestines and passed through the anus. Most fistulas heal well after surgery without anal stenosis or anal contracture, and defecation is usually unaffected. Only serious anal fistula, anal tube irrigation and drainage, there may be anal sphincter relaxation, uncomfortable defecation, etc., or postoperative anal stenosis. Anal fistula surgery general postoperative recovery can be, whether or not the impact on bowel movements depends on the severity of the fistula, it is recommended that once the fistula patients are found, actively cooperate with the treatment, follow the doctor’s instructions to perform.