Patients with itchy throat and cough are not necessarily suffering from lung cancer, it may be pharyngitis caused by gastroesophageal reflux and allergy, or pharyngitis caused by viral infection. Lung cancer patients usually have irritating dry cough, coughing up blood, emaciation, etc. Chest X-ray and lung CT may show mass shadow, and the diagnosis can be clarified after puncture biopsy, bronchoscopy and other related examinations. If the patient’s biopsy or bronchoscopy detects cancer cells, the clinical diagnosis can be confirmed as lung cancer. If cancer cells are detected in the sputum of the patient, the diagnosis of lung cancer can also be confirmed. After the diagnosis of lung cancer is confirmed, appropriate treatment should be given according to the severity of the disease and the type of pathology.