To this day, diabetes is still a chronic disease that cannot be cured and requires lifelong treatment. Unlike the treatment of many diseases, the treatment of diabetes requires lifelong doctor-patient interaction, but the decision is in the hands of the patient himself. When you see your doctor and when you should be hospitalized also depends on your knowledge and understanding of diabetes and whether you pay attention to your health. In general, people with diabetes can live and work like normal people …… However, in the following cases, hospitalization must be considered: 1. Life-threatening acute complications of diabetes, such as combined ketoacidosis, hyperglycemic hyperosmolar coma, lactic acidosis, etc. The mortality rate of these acute complications is high, and the success of rescue is directly related to whether early and timely treatment; 2. Diabetic nephropathy, foot ulcers, gangrene, intractable diarrhea, etc., need to be monitored and treated in hospital; 3, combined with other serious comorbidities such as stroke, heart disease, sepsis, pneumonia, acute cholecystitis, etc.; 4, patients with diabetes requiring surgical treatment, including emergency surgery and elective surgery, should be closely monitored during hospitalization to control diabetes and ensure perioperative safety and post-surgical recovery; 5, if conditions are favorable, newly discovered diabetic patients should be treated in a timely manner. The purpose is to have a comprehensive examination, to understand whether there are complications and other comorbidities of diabetes, to learn to observe the condition, to understand the basic knowledge of diabetes, to learn the specific usage of finger blood glucose monitoring and oral medication and insulin injection methods, to establish contact with the doctor, and to cooperate with the doctor for long-term control of diabetes; 6. Those who have poor effect also need to be hospitalized to understand why the blood glucose is not well controlled, and adjust the treatment plan under the observation and monitoring of hospitalization; 7. Patients with first diagnosis of type 1 diabetes, who have obvious weight loss at the beginning of the disease, prominent symptoms such as thirst and polyuria, high blood glucose and prone to acute complications, such patients need insulin treatment for life, and the purpose of hospitalization is to control high blood glucose and treat complications, and at the same time, let patients like newly discovered The purpose of hospitalization is to control hyperglycemia and treat complications, and at the same time to let the patients understand diabetes knowledge like newly discovered type 2 diabetic patients, learn finger blood glucose monitoring and insulin injection methods, establish contact with doctors, and cooperate with doctors to control diabetes well in the long term; 8, those with frequent hypoglycemia during diabetes treatment.