Benign tumors of the lungs mainly include misshapen tumors, hemangiomas, fibrous tumors and so on, which generally do not affect life expectancy. 1. Malignant tumors are mainly caused by abnormal development during embryonic period, which can be treated by surgery and can be cured, and generally will not affect life expectancy, but there is a very small possibility of malignant changes. 2. Hemangioma is mainly caused by malformation of blood vessels, which can be treated by surgical resection and interventional therapy, and can be cured clinically, and generally will not affect life expectancy. 3. Fibroma is mainly caused by the proliferation of lung fibroblasts, which may compress the surrounding tissues and lead to coughing and other symptoms, and is usually more limited, can be treated by surgery, and generally does not affect life expectancy. If there is a benign tumor in the lungs, it is recommended to seek medical treatment in time to avoid the symptoms of compression.