Anal fistula surgery is a very common surgery, painkillers can to some extent be able to relieve some of the pain. However, due to the very rich nerve endings near the anus, postoperative pain in patients after anal fistula surgery is more serious, postoperative pain for a longer period of time, this time it is more recommended that patients use postoperative analgesic pumps to relieve postoperative pain. In addition, hemorrhoid surgery and anal fistula are more similar, postoperative analgesic pumps have no significant effect on the recovery of incisions after hemorrhoid surgery. The adverse effects of analgesic pumps are mainly side effects from the analgesic medication itself, such as nausea, vomiting, itchy skin, and urinary retention. However, for patients after anal fistula or hemorrhoid surgery, the pain is very intense, which will cause greater impact on the patient, such as insomnia, stronger stress reaction, making the postoperative recovery slow, it is recommended that the use of postoperative analgesic pumps to relieve the pain of the postoperative period is safer and more comfortable.