Primary bronchial cancer is referred to as lung cancer, and the incidence of lung cancer is the first among tumors. The causes of lung cancer include: smoking, chemical carcinogens (such as smoking, coal tar, mustard gas), air pollution, ionizing radiation, nutrition and diet, infection, genetic alteration and so on. The clinical symptoms of lung cancer are irritating cough, hemoptysis, chest pain, fever, shortness of breath, weight loss, hoarseness, etc. After CT, fibrinoscopy and lung aspiration biopsy, a clear diagnosis can be made. The World Health Organization considers lung cancer as a controllable disease. Surgery is preferred for non-small cell lung cancer stage II or above, while chemotherapy, radiotherapy, biological therapy and Chinese herbal medicine can be carried out for stage III or below according to cell types, and most patients can get good control and remission, improve life quality and prolong survival. Therefore, lung cancer patients should improve their confidence to overcome the disease, not to be pessimistic and disappointed, and cooperate with doctors for active treatment, which will get good results.