Recently, a 4000px, 100Kg+ aunt was admitted to the ward for a lumbar spine surgery, and probably a major one as well. I think every surgeon has had the experience of doing surgery for obese patients, a knife down, subcutaneous fat particles will turn out, electric knife and suction have to use extended, hands can not reach the deep part of the incision, not to mention the post-surgery wound fat liquefaction, wound infection, etc., in a word, are tears. A meta-analysis published this March in the Journal of Clinical Orthopaedic and Related Research, “Obese Patients Have Higher Complications and Poorer Outcomes After Spine Surgery. The study found that obese patients were at higher risk for multiple chronic diseases and that spine surgery had longer operative times, more blood loss and higher revision rates. The meta-analysis included 32 studies (8 prospective, 24 retrospective; 97,326 cases) examining the effects of obesity on complication rates, mortality, revision rates, operative time, and blood loss. Obese patients undergoing spinal surgery were found to have higher rates of surgical site infection, higher risk of venous thromboembolism, higher revision rates, longer operative times, and more postoperative blood loss than non-obese patients. Ultimately, however, the mortality rates are similar in both cases. In this regard, I have several lessons: (1) obesity is a killer hidden behind many diseases, so for the sake of health, please control your weight reasonably; (2) as a doctor, you must be careful when operating on obese patients and consider all the possible adverse consequences of obesity; (3) if you perform surgery, it is better to keep the surgery small than large, and the time should be short than long, taking into account the surgical results and surgical safety.