Nursing measures for diabetic ketoacidosis mainly focus on bed rest, establishment of intravenous access, use of insulin, close observation, dietary care and prevention of infection. 1. Bed rest: after diagnosis of diabetic ketoacidosis, bed rest is needed. 2. Establishment of intravenous access: establish intravenous access quickly to correct the disturbance of water, electrolyte and acid-base balance and ketoacidosis symptoms. 3. Use insulin: apply small-dose insulin. 4. Close observation: observe the patient’s vital signs, consciousness, pupil, blood glucose measurement and record. 5. Dietary care: fasting when the patient is comatose, and change to diabetic semi-fluid or diabetic diet after the coma is relieved. 6. Prevention of infection: make sure to do a good job of oral and skin care, keep the skin clean, prevent bedsores and secondary infections, female patients should keep the vulva clean. It is important to note that patients with symptoms of diabetic ketoacidosis must go to a regular hospital for treatment, and do a good job of the corresponding care measures.