Dandelion in water does not play a therapeutic effect of lowering blood sugar. Dandelion water can be supplemented with vitamins and minerals, so diabetic patients drink some dandelion water, can supplement the body needs; however, dandelion water does not play a therapeutic effect of lowering blood sugar. Diabetic patients who need to lower blood sugar should follow the doctor’s instructions to take acarbose, metformin and other hypoglycemic drugs or injections of insulin therapy, with appropriate exercise and exercise and a good dietary control, can help to lower blood sugar. Patients diagnosed with diabetes should actively cooperate with doctors to take a scientific approach to treatment, food alone can not serve the purpose of lowering blood sugar.