Intrapulmonary metastasis of lung cancer mainly has the following manifestations: 1. cough, hemoptysis, shortness of breath and other respiratory symptoms. 2. fever. The metastasis of cancer cells in the lung can obviously weaken the self-cleaning function of bronchial and lung tissues, resulting in poor sputum discharge, and the resistance of the organism decreases, so lung infection is inevitable. Patients will also have difficulty in breathing, obvious decrease in strength and other symptoms, which may lead to respiratory failure in serious cases.