Anal fistulas are in most cases due to perianal abscesses. Postoperative bleeding after anal fistula can usually be stopped by compression hemostasis, drug hemostasis and suture hemostasis. 1. Pressure hemostasis: you can use gauze or gelatin sponge, local use of epinephrine to compress the wound to stop bleeding. Pressure hemostasis is a certain pressure directly on the wound, so that the blood vessel rupture shrinks or coagulation closure, blood flow slows down, so that postoperative bleeding of anal fistula stops. 2. drug hemostasis: commonly used hemostatic drugs for compound keratocyanate cream and Yunnan Baiyao hemorrhoidal ointment, for external application, they have the swelling, pain, itching, hemostasis, and promote the efficacy of wound healing, which will make the anal fistula postoperative bleeding stop. 3. Suture hemostasis: postoperative bleeding after anal fistula is heavy, you can use suture suture treatment, its main purpose is to prevent recurrence, can promote the incision and wound healing as soon as possible, so that the postoperative bleeding after anal fistula stop. If the patient bleeding after surgery, it is recommended to go to the hospital in time, after a clear examination, actively cooperate with the doctor to carry out the corresponding treatment.