Acute diabetes is characterized by the following conditions: 1) the first occurrence of diabetes with high blood glucose; in this case, type 1 diabetes requires lifelong insulin treatment; in the case of type 2 diabetes, short-term insulin treatment, as well as oral medication and lifestyle modification can be used to achieve gradual remission. 2) acute complications of diabetes, such as diabetic ketoacidosis, diabetic lactic acidosis and diabetic hyperosmolar coma. 3. Acute hyperglycemia caused by severe infection, trauma or surgery without previous history of diabetes, which can be cured by removing the stress and applying drugs. After the blood sugar is controlled, it can reach the state of cure.