If obese diabetic patients can reduce their weight to a reasonable range through effective treatment, their blood glucose will be improved, which means that they can achieve better clinical results. In addition to diet control and exercise, the treatment of obese diabetes is to take medication or surgery. Metformin is the first choice for drug treatment, which is relatively cheap and suitable for obese diabetic patients to take orally, can improve insulin resistance, significantly lower blood sugar and reduce weight. Then there is GLP-1 agonist, the drug is injected subcutaneously, mainly to inhibit the appetite center, increase the feeling of satiety, delay the emptying of the stomach and intestines, so as to achieve the purpose of light weight and reduce blood sugar. Then is the surgery, more serious obese diabetic patients, through the surgical gastric diversion surgery to reduce the volume of the stomach, so that obese diabetic patients eat significantly reduced, so as to achieve weight loss, but also to achieve the effect of treatment of diabetes.