Respiratory distress is more common in lung cancer patients and needs to be relieved by specific causes, as follows: 1. If the respiratory distress is caused by airway obstruction or compression, interventional surgery is needed to clear the airway and make it clear to relieve respiratory distress. 2. If the dyspnea is caused by a large amount of pleural fluid compressing the lung tissue, it is necessary to perform chest drainage to drain the chest fluid to relieve the symptoms of dyspnea. For dyspnea, oxygen and non-invasive ventilator can also be used for treatment.