Mild exudative changes in the lungs are likely to be caused by an infection and may also be associated with cardiovascular system disease. The most common cause of mild exudative changes in the lungs is a lung infection, or possibly bronchiectasis with infection. To treat mild pulmonary exudates due to infection, the pathogen causing the infection needs to be treated accordingly. If the infection is viral, the antiviral drug ribavirin can be given; if the infection is bacterial, the anti-infective drug penicillin amoxicillin can be given; and if the infection is Mycobacterium tuberculosis, the anti-tuberculosis drugs rifampicin and isoniazid can be given. Mild exudative changes in the lungs may also be caused by heart failure, which can be treated with cardiotonic, dilatation, diuretic and other treatments. It should be noted that, when the lung mild exudative changes, should go to the hospital to find the cause of the disease, under the guidance of the doctor to treat the cause, do not take medication.