DKA in medicine is the English abbreviation for diabetic ketoacidosis, this disease occurs due to the lack of insulin in the patient’s body or the decline in the role of insulin, the body’s blood glucose level is very high, can not use glucose for energy, the body can only carry out the β-oxidation of fats, which is a large number of products is ketone bodies. After the ketone body is generated too much than the liver metabolism ability will have adverse effects on the body, is diabetic ketoacidosis. The patient manifests frequent nausea, vomiting, fast breathing, very high blood glucose, blood gas analysis suggests acidosis, blood ketone body or urine ketone body is positive. It is a very serious acute complication of diabetes mellitus, and should be hospitalized immediately, after effective treatment, this complication can be effectively controlled.