If a diabetic patient develops diabetic ketoacidosis, several indicators need to be tested: first, ketone body testing, which is mainly used to detect ketone bodies in the blood and urine to reflect the ketone body situation through the indicators, because monitoring of ketone bodies is very necessary in the whole process of ketoacidosis treatment. If the ketone body is slowly changing from more to less, it often indicates that the treatment plan is effective and can continue to maintain the plan, while if the ketone body continues to be high, it indicates that the whole treatment plan has certain deviations and needs to be adjusted in time. Second, blood gas analysis, mainly to assess the acid-base balance, diabetic ketoacidosis is a typical metabolic acidosis, bicarbonate will be significantly reduced, so monitoring blood gas analysis to assess whether the patient needs to supplement a certain amount of sodium bicarbonate is also very necessary. Third, electrolytes, the most likely to occur is hypokalemia, and the impact of hypokalemia on the body can be very serious, so timely monitoring of electrolytes and timely potassium supplementation is a very critical treatment measure.