Thirty-two cases of diabetic ketoacidosis, experienced in St. Marys Hospital, the Catholic 54edical Center, over 7 years periad fs"om Jan. I, l971 to Dec. 31, 1977, were analyzed retrospectively. The following results were obtained. The incidence was 3. 4% of the totaJ diabetic admission during the period, higher than in 1960s 2. The most frequant precipitating factor was infection, pneumonia being predominant. 3. The average fluid and electrolyte administred within th first 24 hours were 5,400ml of water, 482 mEq of Na, 495mKq of Cl, and 46 mEq of K. And the average dose of insulin administred within 24 hours was I10. 3 units. 4. 7 cases were dead, mortality being 21. 9%. Factors contributing to death were hypoglycemia, hypovolemia, and hyperosmolarity. Respiratory acidosis in diabetic ketosis was very serious prognostic factor. 5. As eompared with the result in 1960s, smaller dose of insulin was given but hypoglycemia was stil! Experienced.This suggests that f'urther reductiaa. In insuIin dosage iis required.