Postoperative anal swelling after lumbar spine minimally invasive surgery is mostly related to inflammatory edema, or caused by nerve damage, constipation and other factors, and can be treated according to the cause of the general treatment, medication or physical therapy. 1. Inflammatory edema: lumbar spine surgery has a certain trauma, easy to cause postoperative inflammatory edema, resulting in anal swelling. Cefixime, cefadroxil, azithromycin and other anti-inflammatory drugs should be taken orally as prescribed by the doctor, which is conducive to swelling. 2. Nerve damage: postoperative easy to cause nerve damage, thus causing anal swelling, should follow the doctor’s instructions orally nutritive nerve drugs, such as glutamine, vitamin B6, methylcobalamin and so on. 3. Constipation: prolonged postoperative bed rest, less activity is easy to constipation, defecation difficulties, resulting in anal distension. It is recommended to get out of bed too soon after surgery, which can accelerate the gastrointestinal peristalsis to relieve constipation, and in serious cases, lactulose can be taken orally as prescribed by the doctor, which can soften the stool and help defecation. After lumbar spine surgery, you need to observe your condition regularly to understand the recovery situation, and review your condition on time. If there is any discomfort, communicate with your doctor in a timely manner, and for those who have poor recovery and adverse reactions, they need to be treated in a timely manner.