Patients with anorectal diseases should make the following preparations before surgery in order to better cooperate with the operation. (1) Thought preparation: correct understanding of surgery, eliminate nervous and anxious psychology, many patients heard of surgery, they can not eat, can not sleep, highly nervous, which is not conducive to surgery, while affecting the postoperative response, in fact, we currently apply sacral anesthesia, anal canal anesthesia and other anesthesia methods, surgical pain has been significantly reduced compared with the previous anesthesia methods, postoperative application of long-acting non-steroidal targeted pain medication (flurbiprofen The postoperative application of long-acting non-steroidal targeted analgesic drugs (flurbiprofen) can basically achieve pain-free postoperative period. (2) Dietary preparation: Most of the anal surgery does not require fasting, and a diet with less residue can be eaten on the day of surgery, and it is appropriate to eat about 60% of the usual amount, because anal surgery generally requires defecation after 24 hours, which can avoid defecation on the day of surgery and contamination of the wound. (3) Intestinal preparation: as long as normal defecation before surgery, it is not necessary to clean enema, such as defecation difficulties, can be used to assist defecation with corkage. (4) Surgical field preparation: After perianal warm water cleaning, do skin preparation. (5) Confession of illness: Patients must not conceal other medical history before surgery, such as heart disease, hypertension, diabetes, liver disease, tuberculosis and coagulation disorders; take medications, such as aspirin enteric tablets, clopidogrel and other anticoagulant drugs, so that the doctor can make further examination, determine the treatment plan and make preoperative preparations to prevent intraoperative accidents.