Lung cancer is one of the common malignant tumors, which occurs in the bronchial mucosa and alveoli, excluding tumors metastasized from other organs. In the past half century, the incidence and mortality rate of lung cancer have been increasing in many countries and regions in the world, often accounting for the first place of male cancer and death. In China, the incidence and mortality rate of lung cancer have increased significantly, and the incidence rate of lung cancer in large cities with developed industries is significantly higher than that in rural areas; men are higher than women; the age of onset mostly occurs after middle age and increases with age, but in recent years, the age of onset of lung cancer tends to move forward. What are the early manifestations of lung cancer? Lung cancer is not specific, it has the same symptoms as tuberculosis, pneumonia and chronic lung diseases, or even unnoticed. 1.Cough: It is the most common early symptom, characterized by paroxysmal irritating cough with no sputum or a small amount of foamy white sputum. 2.Hemoptysis: When blood in sputum is found occasionally or intermittently, please do not be careless. 3.Fever: mainly low fever, usually not more than 38.5℃, but high fever may appear when combined with obstructive inflammation. 4, chest suffocation, chest pain: when the mass obstructs the large bronchus or has pleural effusion, you will feel chest suffocation, and when the pleura is involved, you will experience chest stabbing pain. Other symptoms such as significant weight loss, asymmetric swelling of the neck and face, hoarseness, drooping eyelids, choking and coughing, and painful wandering joints around the body should also remind you to seek medical treatment in time. Who are the high-risk groups for lung cancer? We should remember the three “20s”, those who have smoked for more than 20 years, those who started smoking under 20 years old, and those who smoke more than 20 cigarettes a day. What physical examination should be done when a patient suspects that he/she has lung cancer? If you are not feeling well, don’t avoid going to the hospital as soon as possible, our doctors will help you to nip the disease in the bud. How to treat advanced lung cancer? At present, the treatment methods for lung cancer mainly include surgery, systemic chemotherapy, radiation therapy, thermal infusion therapy, Chinese medicine, immunomodulation, targeted therapy, etc. There are many factors affecting the prognosis of lung cancer, the most important of which is the degree of tumor spread and the classification of tumor. Early detection, early diagnosis and early treatment are the keys to treat lung cancer.