Inclusion criteria
anal fistula, fistula, abnormal anal morphology and function
LOCAL INFILTRATION
(1) Patients who met the above diagnostic criteria for anal fistula; (2) Patient aged > 18 years and <60 years; (3) The surgical method used was conventional anal fistula resection; (4) All surgeries were performed under either local infiltration anesthesia or lumbar anesthesia; (5) Patients without previous history of anal fistula surgery, or abnormal anal morphology and function; (6) Patients who agreed to be treated with Zibai ointment and gave their signed informed consent.