For patients with type 2 diabetes it is important to pay attention to the control of the disease, otherwise it may lead to the occurrence of acute complications, the most common of which is ketoacidosis. If ketoacidosis occurs in patients with type 2 diabetes, it is often critical because the biggest pathological and physiological change in this disease is the formation of acidosis, which is a very typical metabolic acidosis, and if the patient’s acidosis continues to deteriorate, it will have a serious impact on the heart and breathing, and will eventually lead to death. The most important point in the management of type 2 diabetic ketoacidosis is the following: 1. massive rehydration, which is the most crucial, only through massive rehydration can the elimination of ketone bodies and improve the circulation to achieve the more important purpose. 2. the use of small doses of intravenous insulin. 3. the correction of electrolyte disorders, the most crucial of which is the monitoring of potassium ion concentration, to prevent the formation of hypokalemia.