Recently, the new coronavirus epidemic, diabetic patients have poorer defenses against pathogens than healthy people, similarly, the resistance to the new pneumonia is also weaker, once infected, prone to serious patients. Therefore, to effectively prevent and control the new coronavirus pneumonia, diabetics should pay attention to the following points in their daily life: Firstly, pay attention to scientific prevention. Second, reasonable nutrition regular exercise is the basic requirement of diabetes treatment, at this time to pay attention to both to be able to provide sufficient calories, while paying attention to increase the intake of fresh vegetables and an appropriate amount of fruit. And according to the results of blood sugar monitoring, actively adjust the number of hypoglycemic drugs to avoid blood sugar fluctuations. For patients who develop pneumonia, when the symptoms of pneumonia are heavy, patients often lose their appetite and should undergo medical nutrition therapy under the guidance of a dietitian, and if necessary, formula enteral nutrition can be given according to the patient’s condition. In addition to proper nutrition, exercise is one of the foundations of diabetes treatment. However, in the acute phase of pneumonia, excessive exercise is not advocated. Some low-intensity aerobic exercises, such as walking, can be used for patients with mild disease. In addition, for sugar lovers, there is a big difference in diet treatment, exercise treatment and daily life status in the case of combined pneumonia. At this time, among the blood sugar control, medication becomes especially important. Generally speaking, if a patient has a combination of more serious systemic symptoms, such as fever of moderate degree or above, insulin therapy is often required. Insulin therapy at this time. Insulin therapy during diabetes mellitus combined with pneumonia must be guided by strict glucose monitoring. As far as the goal of glycemic control is concerned, diabetic patients with combined pneumonia just need to achieve a moderate level of glycemic control. Generally, a fasting glucose of 7 mmol/L or less and a two-hour postprandial glucose of less than 10 mmol/L is sufficient. In addition, diabetic co-infection of the lungs is often a common trigger of ketoacidosis. Symptoms include irritability, excessive drinking, polyuria, increased symptoms of malaise, and the patient may experience nausea, vomiting, abdominal pain, and an exhaled breath that smells like rotten apples, and in severe cases may gradually become unconscious to the point of shock and coma. Another common acute metabolic complication of diabetes is hyperglycemic hyperosmolar coma, which is more common in the elderly or in those with combined kidney disease. Patients may also experience increased thirst, excessive drinking and polyuria, and gradually develop mental disturbances such as irritability, restlessness, drowsiness, and delirium. Do not hesitate to seek immediate medical attention when these symptoms occur in diabetic patients with pulmonary infections.