Lung lavage surgery is divided into three steps: preoperative preparation, operation and postoperative care. 1. Pre-operative preparation: first of all, the lung segments to be cleaned should be injected with lidocaine for local anesthesia or general anesthesia for high-capacity whole-lung lavage, so as to reduce the patient’s pain. 2. Operation during the surgery: after anesthesia, reach the opening of the cleaned lung segment through fiberoptic bronchoscope, quickly inject about 50 ml of sterilized saline at the right temperature, and then immediately recover it by negative pressure suction, and then repeat this operation for several times. 1000 ml of saline is generally enough, but the volume of large-volume whole-lung irrigation can be up to 5,000-10,000 ml. 3. Post-operative care: patients should be prohibited from smoking and alcohol, to reduce the stimulation of the lungs, within a week should ensure adequate rest, to prevent colds, in order to prevent lung infections, discharged from the hospital patients in half a year to a year to take chest X-ray and review of lung function. Lung lavage surgery is operated by specialized physicians, if you feel unwell, it is recommended to consult a doctor in time.