Deep breathing chest pain is not necessarily lung cancer, but may also be other lung diseases such as pleurisy, pleural effusion, lung and bronchial inflammation, etc. Other angina pectoris or reflux esophagitis may also cause deep breathing chest pain, and lung cancer cannot be diagnosed based on this symptom. If it is lung cancer, it may also have this symptom. Lung cancer belongs to a kind of malignant tumor of the respiratory system, which may not have obvious symptoms in the early stage, but will show symptoms such as chest pain, chest tightness, cough, coughing and hemoptysis as the disease develops. Occupational lung lesions can be detected through lung CT examination, and further percutaneous lung aspiration biopsy or bronchoscopy can be performed to obtain a clear pathological diagnosis of lung cancer. After the diagnosis is confirmed, surgery is also the main treatment, as well as radiotherapy and targeted drugs.