The early symptoms of tumor are mild and difficult to detect, and most of the tumor patients are mostly in the middle and late stages when they are found. Traditional clinical treatments are mainly through surgery, chemotherapy, radiotherapy, etc. The disadvantage of these treatments is that they have a lot of side effects and make the already low immune function even lower, so that patients will suffer from hair loss, weight loss, low white blood cells, and reduced liver and kidney function. Interventional therapy shows its advantages in these aspects, especially in the treatment of lung cancer. Interventional therapy is a new method of injecting drugs directly into the lesions in the lung through selective bronchial artery cannulation or fiberoptic bronchoscopy, which has the advantages of smaller drug dose, better efficacy and less side effects compared with conventional oral or intravenous injection methods. Lung cancer: 1.For patients without surgical indications but with tumor confined to the lung, chemotherapy drugs can be injected directly into the tumor through interventional therapy, which can reduce the dose and increase the concentration of drugs in the tumor, thus increasing the efficacy and reducing the side effects; 2.Selective bronchial artery embolization can cut off the blood supply to the tumor, causing ischemia and gradual necrosis; 3.Lung cancer invades the trachea or main bronchus, resulting in severe obstruction of the airway. Severe obstruction of trachea or main bronchus causes airway obstruction, and the patient has obvious difficulty in breathing. The tumor can also be cauterized or tracheal stent can be placed via fiberoptic bronchoscope using laser or fractional meter wave to relieve airway obstruction and respiratory distress; 4.