Hemorrhoids do surgery may have infection, urinary obstruction, anal stenosis and other sequelae. 1. Infection: because just after the surgery, the rectal-anal wound is still not healed, so it is easy to be contaminated by feces and urine, so the incision may be infected. 2. Urinary obstruction: Because anesthesia is applied during hemorrhoid surgery, when the anesthesia is not fully metabolized, it is easy to relax the bladder muscle, causing urinary retention and urinary obstruction. 3. Anal stenosis: If there is excessive fibrous proliferation during the healing process of the scar after hemorrhoidal surgery, it is easy to cause anal stenosis. In addition, after hemorrhoid surgery may cause fecal impaction, urinary tract infection, rectal perforation and other sequelae. All in all, patients need to strengthen their daily life management after the surgery, keep the local area clean and go to the hospital for follow-up on time. If there are sequelae after hemorrhoid surgery, you need to actively cooperate with the doctor to avoid delaying the condition.