For a long time, people think that postoperative pain is natural and inevitable, and they just suffer in silence after surgery. In fact, pain can be controlled and can be reduced or achieved pain-free by drugs or tools. Pain, an adverse stimulus, can cause a series of pathophysiological changes in the body, such as the effect on the autonomic nervous system of the body: making the heart rate accelerate, shortness of breath and blood pressure rise; mental changes leading to irritability and depression, which then affect the function of the digestive system and the recovery of physical strength; endocrine and hormonal effects, which directly and indirectly cause changes in various body functions. Anal surgery patients also often worry about postoperative pain, and this is especially true for some patients who are sensitive to pain. In fact, with the progress of science, more and more postoperative analgesic measures are available, and patients’ pain has been greatly reduced compared to the past. Today we will introduce you to several pain relief measures commonly used after anal surgery. Analgesic pump An analgesic pump is a fluid infusion device that maintains a stable concentration of medication in the bloodstream, which can help achieve better analgesic treatment with less medication. Patients are usually allowed to press themselves to add an additional infusion dose to the continuous infusion volume, so treatment is more individualized, in line with the wide variation in individual pain perception. Analgesics Analgesics for pain Commonly used analgesics include morphine and pethidine. Intramuscular injection on the night of surgery provides good pain relief and helps the patient to sleep. Postoperative use is generally limited to 1 or 2 times, and should not be used more than once, otherwise it will easily affect the recovery of intestinal motility and urinary function. Other analgesics Commonly used are indomethacin suppositories (anti-inflammatory pain suppositories), administered through the anus, with good antipyretic and analgesic effect; flurbiprofen ester, intravenous injection; analgesic, intramuscular injection; tramadol class oral, etc. Advantages of postoperative analgesia 1.Reducing patients’ pain and discomfort, relieving anxiety and improving sleep; enabling patients to spend the postoperative period in a more comfortable state; 2.Eliminating the reluctance to deep breathing and coughing caused by pain, improving breathing, promoting sputum discharge and reducing pulmonary infection; 3.Reducing pain, prompting patients to get out of bed early, early functional exercise, reducing the risk of deep vein thrombosis caused by longer bed rest 4.Block sympathetic hyperexcitation, eliminate tension, dilate blood vessels, improve microcirculation, thus promoting wound healing and speeding up postoperative recovery; 5.Inhibit sympathetic activity, promote gastrointestinal peristalsis and help restore gastrointestinal function after surgery; 6.Reduce hospitalization time and save costs by reducing complications and speeding up recovery. Side effects of postoperative analgesia The main side effects of postoperative analgesia include skin itching, nausea and vomiting, urinary retention, and some patients may experience drowsiness and dizziness, but these side effects can be controlled or avoided through appropriate treatment, and the side effects of analgesia are acceptable to the majority of patients compared to postoperative pain. In addition, since there are some opioids in analgesics, some patients worry whether they will become addicted, which is totally unnecessary because it is a purposeful short-term continuous medication, and there are strict procedural norms for dosage and usage, and more importantly, the recipient is a patient who needs treatment, which is a reasonable and safe medication.