Diabetic patients who have developed a more serious condition, such as fasting blood glucose over 15mmol/L or more, 2 hours after meals blood glucose has reached 20mmol/L or more, should be promptly hospitalized for treatment, in the outpatient treatment is difficult to achieve a more stable treatment effect, as follows: 1. Patients will be hospitalized with insulin treatment, because the blood glucose level is relatively high, the use of insulin treatment is During hospitalization, patients need to improve the test of pancreatic islet function, according to the level of pancreatic islet function, and then decide whether to use insulin or oral hypoglycemic drugs as the next step. 3, during hospitalization, patients will also improve the relevant auxiliary tests to assess whether there are chronic complications of diabetes. If these complications exist, the patient will need to be treated with the appropriate medication.