Patients with either stage I, II or III pneumoconiosis can consider lung lavage, but in terms of lung lavage results, pneumoconiosis patients who have recently been exposed to dust and have stage I or 0+ pneumoconiosis will have better results. The method of lung lavage is usually to intubate the patient under general anesthesia, first on one side, and then on the other side after an interval of several days. If the patient is in good general condition, simultaneous large volume alveolar lavage of both lungs can be completed within 1 day. Patients should be examined for tuberculosis and other diseases such as lung cancer before undergoing large volume alveolar lavage. Once contraindications to lung lavage have been ruled out, large volume alveolar lavage can be considered. Patients are usually treated with anti-infective therapy after lung lavage to avoid secondary lung infections. Postoperative observation is usually done for 1-2 days and if the condition is good, discharge may be considered.