The side effects of lung lavage are generally minor, and some people will experience fever and hemoptysis. Lung lavage means large volume alveolar lavage and generally has few side effects. Intraoperative side effects include bleeding and anesthesia accidents, and postoperative complications include fever, hemoptysis, infection, and respiratory failure, etc. These side effects can basically be improved after treatment. Fatal side effects of lung lavage are rare, so lung lavage is a relatively safe treatment. For patients with pneumoconiosis and alveolar protein deposition, etc., if the disease is diagnosed, lung lavage should be performed as early as possible, rather than waiting until lung function is worse before considering lung lavage, when the risks will be greater and the likelihood of side effects will be greater.