Weight loss metabolic surgery for diabetes is already a standard treatment option, and the number of people treating diabetes through this procedure is climbing every year in China, a major diabetic country. In fact, the main reason why people choose weight loss metabolic surgery to treat diabetes is because the effect of surgical treatment is much better than traditional medical therapy. After the surgery, the patient’s insulin resistance and blood glucose level will be reduced, and those patients whose condition is not very serious can even get rid of the glucose-lowering drugs in this regard, which is not possible with the traditional treatment methods. But if it is really possible to control blood sugar without medication, what are the areas that need special attention from patients? Weight loss metabolic surgery can free some diabetic patients from drug dependence, but this does not mean that they are back to the state they were in before the disease, they still have a lot to pay attention to in terms of diet and lifestyle habits. The root cause of diabetes is that the pancreatic islets are not fully functional and cannot secrete enough insulin to regulate blood sugar, while weight loss metabolic surgery for diabetes is to reduce the pressure on the pancreatic islets by lowering insulin resistance and directly lowering blood sugar so that its residual function is also sufficient to play a role in regulating blood sugar. However, if the patient still overeats and eats foods with a high glycemic index, this will cause the blood sugar to rise too quickly and exceed the regulation ability of his or her pancreas, so it will still end up with high blood sugar. Even after weight loss metabolic surgery, patients should still try to avoid eating foods with a high glycemic index, not overeating, and strengthening exercise to enhance the function of the pancreatic islets, so as to avoid a rise in blood sugar and achieve the best treatment effect.