Type 2 diabetic ketoacidosis is usually recoverable if treated promptly and with a good underlying condition, while a small percentage of patients may develop irreversible nerve damage and other sequelae. Type 2 diabetic ketoacidosis is mainly caused by poor glycemic control, large amounts of fat decomposition, resulting in a large number of ketone bodies into the blood. Clinically, insulin is the main choice for control, while saline rehydration and close monitoring of electrolyte changes. If the treatment is standardized and timely, ketosis can usually be recovered. If not timely and effective treatment, the further development of the condition may appear deep breathing, dehydration, drowsiness, impaired consciousness, coma and other symptoms, at this time it is difficult to recover. Patients with type 2 diabetes need to pay attention to blood glucose control on weekdays, and if ketoacidosis occurs, it is necessary to consult a doctor in a timely manner and standardized treatment.