DISCUSSION: The disease belongs to lung benign tumor, accounting for 0.1%-0.4%of all respiratory tract tumor, the current number of domestic reports is about 46, and plus this case, it is a total of 47 cases, 36 cases of men and women in 11 cases. Onset age from 19 to 74 years old, the average age (57±12) years old. Some scholars think that obesity and smoking is the susceptible risk factors of the disease. The high resolution CT can find the location and size of the early lesion in lungs, and can determine the nature of lump primarily according to CT value surveyed, lung lipoma belongs to low density organization, the edges of tumors are smooth, uniform density. The CT value of adipose tissue is between -40Hu-120Hu, so measuring the mass CT value can identify with other benign lung tumors. Most of scholars both Chinese and abroad promote excision under general anesthesia via rigid bronchoscopy, the microscopic interventional treatment method can be chosen, such as argon, carbon dioxide laser frozen, high-frequency electric coagulation trap electric cut, and lumen local radiotherapy, etc.