Patients with cytomegalovirus pneumonia commonly have glassy, corn-like, or nodular changes in both lungs on chest radiographs and CT. Cytomegalovirus (CMV) is a viral pneumonia characterized by the formation of large type A eosinophilic intranuclear and intracytoplasmic inclusions in infected cells. Most are asymptomatic occult infections, but in immunocompromised and infants can cause severe lung infections leading to death. In recent years with the introduction of bone marrow and organ transplantation and the increasing number of AIDS patients, CMV has become the most common causative agent in both conditions. Preventive measures for hairy glassy corn-like or nodular changes in both lungs: 1. Medication: follow medical advice and pay attention to post-medication reactions. 2, diet: light, easy to digest, rich in nutrients, pay attention to the post-illness conditioning. Overcome bad habits such as partial eating. 3.Exercise: Get more sunlight and do outdoor activities to enhance physical fitness and improve resistance to disease. (1) Increase or decrease clothing according to climate change, pay attention to the adjustment of cold and warmth. (2) Keep indoor air fresh. Open windows more often for ventilation. (3) Treat colds and coughs promptly to prevent their development. (4) Go to public places less often during the cold and flu season. 5.Emotional and spiritual: Create a warm and pleasant living environment. 6.Regular follow-up: Follow the doctor’s instructions for follow-up. If coughing, shortness of breath and temperature rise again, seek medical attention promptly.