If a diabetic patient is seen for the first time, he or she must ask if there are three symptoms: thirst, excessive drinking, excessive urination, excessive eating, and weight loss. If you are thirsty, you should ask how much water you drink every day; if you are polyuric, you should ask how much you can urinate in 24 hours; if you are polyphagic, you should ask how many staple foods and side dishes you eat at each meal; if you are thin, you should ask how much weight you have lost in the recent period of time, whether it is six months or one year. After that, we should ask about the specific blood glucose situation, whether the blood glucose was measured by fingertip or intravenous, in which hospital it was measured, whether glycated hemoglobin was measured, whether the diagnosis of diabetes was made, and whether active treatment was carried out afterwards. The treatment should ask whether the diet is controlled, whether the diabetic recipes are strictly followed, and whether it is accompanied by physical exercise, and how much exercise is done on a daily basis. And most importantly, what kind of medication is used to treat the disease, which oral medication and what is the dosage, do not ask how many tablets you take every day, you must ask the specific dosage. Which kind of insulin is insulin, is it long-acting, is it short-acting, is it a pencil or a special filling, how much is the specific dose, whether the blood sugar situation is high or low during the process of playing, whether there is a hypoglycemic reaction or a hyperglycemic reaction. On the other hand, we should start to ask whether there are acute and chronic complications of diabetes. For acute complications, we should ask whether there are repeated hypoglycemic reactions or coma, whether there is diabetic ketoacidosis, and whether there is hyperosmolar coma. To provide a basis for differential diagnosis of type 1 type 2 diabetes. To see if there are any macrovascular and microvascular complications of diabetes mellitus. Female patients are asked about the effect on menstruation and whether there is vulvar pruritus. Male patients are asked if there are any disorders of sexual life.