A small amount of bleeding from the wound after anal fistula surgery is usually normal, if the bleeding is large it is usually not normal.
Anal fistula surgery involves cutting all the way through the fistula and, if necessary, trimming the scar tissue around the fistula appropriately. The incision is usually not sutured after anal fistula surgery to allow for dressing changes, removal of secretions, and removal of granulation. If there is a slight oozing of blood from the wound, it may be caused by friction and irritation of the mucous membrane of the wound when changing medication or removing secretions, so it is a normal phenomenon.
However, if there is persistent oozing of blood, or the amount of bleeding is relatively large, it may be due to local rupture of small blood vessels or damage to large blood vessels, in which case the doctor should be notified immediately to take timely measures to stop bleeding, and if necessary, suture to stop bleeding.
Therefore, if you find any abnormality after anal fistula surgery, you should inform the doctor in time, and the doctor will deal with it according to the specific situation.